Add GitHub Actions workflow for Zizmor security analysis (#1699)

.github/workflows/zizmor.yml

diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 0000000..b0f811f
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,26 @@
+name: GitHub Actions Security Analysis (zizmor)
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["**"]
+
+permissions: {}
+
+jobs:
+  zizmor:
+    name: Run zizmor
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write # Required for upload-sarif (used by zizmor-action) to upload SARIF files.
+      contents: read         # Only needed for private repos. Needed to clone the repo.
+      actions: read          # Only needed for private repos. Needed for upload-sarif to read workflow run info.
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run zizmor
+        uses: zizmorcore/zizmor-action@5f14fd08f7cf1cb1609c1e344975f152c7ee938d # v0.5.6