chore: Improve security posture of workflows

Signed-off-by: Austin Ziegler <[email protected]>

.github/workflows/dco-check.yml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: KineticCafe/[email protected]
         with:

.github/workflows/dependabot-automerge.yml

@@ -3,14 +3,14 @@ name: Dependabot auto-merge
 on:
   pull_request:
 
-permissions:
-  contents: write
-  pull-requests: write
-
 jobs:
   dependabot-automerge:
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: write
+      pull-requests: write
+
     steps:
       - uses: KineticCafe/actions/[email protected]
         with:

.github/workflows/elixir.yml

@@ -55,6 +55,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
       - uses: erlef/setup-elixir@v1
         id: install
         with:

.github/workflows/integration.yml

@@ -30,6 +30,8 @@ jobs:
     steps:
       # Check out code
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       # Typescript Setup
       - uses: pnpm/action-setup@v4

.github/workflows/reviewdog.yml

@@ -3,18 +3,21 @@ name: Reviewdog
 on:
   pull_request:
 
-permissions:
-  contents: read
-  pull-requests: write
-
 jobs:
   misspell:
     if: ${{ github.event.action != 'closed' }}
     name: Misspell
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
+      pull-requests: write
+
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
       - uses: reviewdog/action-misspell@v1
         with:
           path: |
@@ -55,17 +58,30 @@ jobs:
     name: Actionlint
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
+      pull-requests: write
+
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
       - uses: reviewdog/action-actionlint@v1
 
   biome:
     if: ${{ github.event.action != 'closed' }}
     name: 'Typescript: Biome'
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
+      pull-requests: write
+
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: pnpm/action-setup@v4
         with:
@@ -89,8 +105,14 @@ jobs:
     name: 'Ruby: Standard'
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
+      pull-requests: write
+
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: ruby/setup-ruby@v1
         with:
@@ -109,8 +131,14 @@ jobs:
     name: 'Elixir: Credo'
     runs-on: ubuntu-latest
 
+    permissions:
+      contents: read
+      pull-requests: write
+
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: erlef/setup-elixir@v1
         id: install

.github/workflows/ruby.yml

@@ -74,6 +74,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: ruby/setup-ruby@v1
         with:

.github/workflows/typescript.yml

@@ -24,6 +24,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: pnpm/action-setup@v4
         with:

.github/workflows/zizmor.yml

@@ -0,0 +1,34 @@
+name: GitHub Actions Security Analysis with zizmor
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+
+jobs:
+  zizmor:
+    name: zizmor latest via Cargo
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+      # required for workflows in private repositories
+      contents: read
+      actions: read
+    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
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: results.sarif
+          category: zizmor