chore: mirror v28.3

diff --git a/protoc/private/versions.bzl b/protoc/private/versions.bzl
index 0a8b614..6bd7d20 100644
--- a/protoc/private/versions.bzl
+++ b/protoc/private/versions.bzl

@@ -328,6 +328,18 @@
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         "protoc-28.2-win64.zip": "sha384-jvlQRfQE4ZO5MxDt4oCWZeL+/z1Tiko1/1LLsnR78kePI4MY4n/g+/wlUDsHlw9P",
     },
+    "v28.3": {
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+        "protoc-28.3-linux-ppcle_64.zip": "sha384-w5HZR9V1aMWYDembBf2QbskAF/Yyoy5NoQdeqmtbmuKkO5oK9V6CMVD/1y5vcvsE",
+        "protoc-28.3-linux-s390_64.zip": "sha384-uJjf0pyQHRm0LZMlbsR2UG+AfcwAblZ33TAadqYUIEBu7d+HCqmHgqQseGZn9eR/",
+        "protoc-28.3-linux-x86_32.zip": "sha384-w4cNIBqO/bXyMfCpTJQfwYDWdChzdp0OS9eItNsEj4Eb1i1vWvB/0GgyC1Btzrr5",
+        "protoc-28.3-linux-x86_64.zip": "sha384-6yxoEN9x5ZXC32Dgus1tLjPUugAbVTN27c8AIeKJaIrYWqv0jtcotyd2qRKHIrJ6",
+        "protoc-28.3-osx-aarch_64.zip": "sha384-zNxA+U7FDwgkf3wqLTM/a5tYg/RjI1zdImPDtDObdPI3utJLxNydYULUuR9xZzd8",
+        "protoc-28.3-osx-universal_binary.zip": "sha384-3A/9yGBvOkTKB1JQvnCf100V1eIKbimH9utCk+4c3F2UbaCdps789jTVerVOJn+r",
+        "protoc-28.3-osx-x86_64.zip": "sha384-vXuyI0K/aShK77gKF+vzUnpEpNN6Wve5nxKfc5WyBtVFISV2VIfR+jq1OyneX1+r",
+        "protoc-28.3-win32.zip": "sha384-dh5KjWkmyvbmolibyKNUY12/TmABh5Kb4ifUC8JoP2WCC4NgcyWJVDhuF0kiS6SQ",
+        "protoc-28.3-win64.zip": "sha384-0qxbj+7Qcv0hovewIPWnvU9wIKzAi2/5IY9zMG3+u57GCLYM+ir+kwxlHb610/jq",
+    },
     "v29.0": {
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         "protoc-29.0-linux-ppcle_64.zip": "sha384-Yd8IESZ59LY14DGqz3/wa0aJvoGLo4D8XhgFr/AznGhcJn9zRWgs0qNZvdvDnHDi",
@@ -541,6 +553,18 @@
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         "protoc-31.1-win64.zip": "sha384-cZ+b4GchBvIRlYHZgmtToHdxsLStALDXgVazFKaqvsCtJdCgV3jrzXeZ0T8TI729",
     },
+    "v32.0": {
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+        "protoc-32.0-linux-ppcle_64.zip": "sha384-IuC5XPbNFFuSETfxH0P6oLvLnTzbXW5NrNmJu9rOJyYvFowSQGOZJ0jvg9uNQ2eV",
+        "protoc-32.0-linux-s390_64.zip": "sha384-gbk+H5cmxeWZaCm8sHB5hthO7ytEdBnLZsQHfg41fwnwISH91l2w9GO4kJTUKdRp",
+        "protoc-32.0-linux-x86_32.zip": "sha384-xjUD3nyOkFUY6+bqxFMWmF8a6eC2/stIiV6f01DSbwQSccqBQDnpcNtsTW/qqwpT",
+        "protoc-32.0-linux-x86_64.zip": "sha384-BcgrSWHULt0lpONa4Iu7HHxmkQUuOyQzob46/EzzDHmQFEBbLsZWNgz/V8Jr6iez",
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+        "protoc-32.0-osx-universal_binary.zip": "sha384-Ir80rObpGS5IEZlEN8C40Z19xH2KOV63K6xKS8hxAAcI18+SxjR6sG3mEDGkQ0nL",
+        "protoc-32.0-osx-x86_64.zip": "sha384-bMn0FFiBBdSpoMPQJnOYN0wipgkQRa9J06gCltJGpGRFP57oo1BRzMQnBn2Xn6Pj",
+        "protoc-32.0-win32.zip": "sha384-1dCAqWUH1u6VMfvUGDn0QJuQH81URepEKXVs4b6HgOTTHHEYfvnnmTiF7kC5fQea",
+        "protoc-32.0-win64.zip": "sha384-gWbPYPn5ta+/MbEWop0oV55g8Rmv0gO9L9aNEokGH8O1kOhBrC2wHAq/M/pvSXbB",
+    },
     "v32.0-rc1": {
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@@ -565,18 +589,6 @@
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         "protoc-32.0-rc-2-win64.zip": "sha384-ERfa0IRUNFKjvKb+PaoY590hg8nyDZJaH7LXExbPhhrALjjyTgtgGogE/fLuDlMp",
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-    "v32.0": {
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-        "protoc-32.0-linux-ppcle_64.zip": "sha384-IuC5XPbNFFuSETfxH0P6oLvLnTzbXW5NrNmJu9rOJyYvFowSQGOZJ0jvg9uNQ2eV",
-        "protoc-32.0-linux-s390_64.zip": "sha384-gbk+H5cmxeWZaCm8sHB5hthO7ytEdBnLZsQHfg41fwnwISH91l2w9GO4kJTUKdRp",
-        "protoc-32.0-linux-x86_32.zip": "sha384-xjUD3nyOkFUY6+bqxFMWmF8a6eC2/stIiV6f01DSbwQSccqBQDnpcNtsTW/qqwpT",
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-        "protoc-32.0-osx-universal_binary.zip": "sha384-Ir80rObpGS5IEZlEN8C40Z19xH2KOV63K6xKS8hxAAcI18+SxjR6sG3mEDGkQ0nL",
-        "protoc-32.0-osx-x86_64.zip": "sha384-bMn0FFiBBdSpoMPQJnOYN0wipgkQRa9J06gCltJGpGRFP57oo1BRzMQnBn2Xn6Pj",
-        "protoc-32.0-win32.zip": "sha384-1dCAqWUH1u6VMfvUGDn0QJuQH81URepEKXVs4b6HgOTTHHEYfvnnmTiF7kC5fQea",
-        "protoc-32.0-win64.zip": "sha384-gWbPYPn5ta+/MbEWop0oV55g8Rmv0gO9L9aNEokGH8O1kOhBrC2wHAq/M/pvSXbB",
-    },
     "v32.1": {
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         "protoc-32.1-linux-ppcle_64.zip": "sha384-i6tRteYfc5ylEOQ3fhI3cu8Rw8cvWHHV1o8Pj9Kva0rSD4zUcStxKGA4sw00QAKc",
@@ -589,6 +601,18 @@
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+    "v33.0": {
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+        "protoc-33.0-linux-s390_64.zip": "sha384-4i2784V0LIzfvP234duI3jT6Si6bZ0IzT3FDc6YMox92nmwfTx70P+D0zzslMW3Q",
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+        "protoc-33.0-osx-x86_64.zip": "sha384-Pzk9MRv8gqr38T/opKYVImbCfA3K/oDLYO1IJSM9RqB9P0uLyuXksd+G4Logf8Uh",
+        "protoc-33.0-win32.zip": "sha384-LKppG+pkBl+vGhYhETSJJop3vKP7f6tgFXDI4OAMNwArY/E68nrKTCxFcpnzo2lc",
+        "protoc-33.0-win64.zip": "sha384-92kkrMibOcb4vJLjPo867pSjCVC07RFNRJ3DMPV02YHFy2F/Tjhrgt5+Gp8JqbLy",
+    },
     "v33.0-rc1": {
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@@ -613,16 +637,4 @@
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-    "v33.0": {
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-    },
 }