Enable zizmor in github actions

Also add fixes to actions from zizmor runs.

Signed-off-by: Ayan Sinha Mahapatra <asmahapatra@aboutcode.org>

Author: AyanSinhaMahapatra

.github/workflows/docs-ci.yml

@@ -2,6 +2,7 @@ name: CI Documentation
 
 on: [push, pull_request]
 
+permissions: {}
 jobs:
   build:
     runs-on: ubuntu-24.04
@@ -14,6 +15,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+        with:
+          persist-credentials: false
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405

.github/workflows/pypi-release.yml

@@ -18,13 +18,16 @@ on:
     tags:
       - "v*.*.*"
 
+permissions: {}
 jobs:
   build-pypi-distribs:
     name: Build and publish library to PyPI
     runs-on: ubuntu-24.04
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+        with:
+          persist-credentials: false
       - name: Set up Python
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:

.github/workflows/zizmor.yml

@@ -0,0 +1,24 @@
+name: GitHub Actions Security Analysis with 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.
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run zizmor 🌈
+        uses: zizmorcore/zizmor-action@b1d7e1fb5de872772f31590499237e7cce841e8e # v0.5.3