pw_env_setup: Retrieve ARM Mac LUCI packages

Retrieve LUCI packages for arm64 Macs in bootstrap.

Change-Id: I9ca9c57d3b64f7bb0107ec8f34f04a478636cd41
Bug: 458
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/61240
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Ted Pudlik <tpudlik@google.com>
diff --git a/pw_env_setup/py/pw_env_setup/cipd_setup/luci.json b/pw_env_setup/py/pw_env_setup/cipd_setup/luci.json
index ef62430..0325053 100644
--- a/pw_env_setup/py/pw_env_setup/cipd_setup/luci.json
+++ b/pw_env_setup/py/pw_env_setup/cipd_setup/luci.json
@@ -5,6 +5,7 @@
             "linux-amd64",
             "linux-arm64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [
@@ -17,6 +18,7 @@
             "linux-amd64",
             "linux-arm64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [
@@ -29,6 +31,7 @@
             "linux-amd64",
             "linux-arm64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [
@@ -41,6 +44,7 @@
             "linux-amd64",
             "linux-arm64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [
@@ -53,6 +57,7 @@
             "linux-amd64",
             "linux-arm64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [
@@ -65,6 +70,7 @@
             "linux-amd64",
             "linux-arm64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [
@@ -76,6 +82,7 @@
         "platforms": [
             "linux-amd64",
             "mac-amd64",
+            "mac-arm64",
             "windows-amd64"
         ],
         "tags": [