ci: Use zizmor to find security issues in GitHub Actions setups

.github/workflows/codeql-analysis.yml

@@ -40,6 +40,8 @@ jobs:
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: read environment file
       run: cat .harvest.env >> "$GITHUB_ENV"

.github/workflows/commitlint.yml

@@ -6,4 +6,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: wagoid/commitlint-github-action@v6

.github/workflows/go.yml

@@ -15,6 +15,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
 
     - name: read environment file
       run: cat .harvest.env >> "$GITHUB_ENV"

.github/workflows/lint-pr.yml

@@ -1,13 +1,18 @@
 name: "Lint PR"
 on:
-  pull_request_target:
+  pull_request:
     types:
       - opened
       - edited
       - synchronize
+      - reopened
+
+permissions:
+  pull-requests: read
 
 jobs:
   main:
+    name: Validate PR title
     runs-on: ubuntu-latest
     steps:
       - uses: amannn/action-semantic-pull-request@v5

.github/workflows/zizmor.yml

@@ -0,0 +1,35 @@
+# https://github.com/woodruffw/zizmor
+name: GitHub Actions Security Analysis with Zizmor
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["*"]
+
+jobs:
+  zizmor:
+    name: Zizmor latest via Cargo
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      security-events: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Setup Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Get zizmor
+        run: cargo install zizmor
+      - name: Run zizmor
+        run: zizmor --format sarif . > results.sarif
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          # Path to SARIF file relative to the root of the repository
+          sarif_file: results.sarif
+          # Optional category for the results
+          # Used to differentiate multiple results for one commit
+          category: zizmor