chore: use zizmor to harden GHA usage (#869)

.github/dependabot.yml

@@ -4,8 +4,12 @@ updates:
     directory: /
     schedule:
       interval: weekly
+    cooldown:
+      default-days: 3
   - package-ecosystem: cargo
     directory: /
     schedule:
       interval: weekly
+    cooldown:
+      default-days: 3
     versioning-strategy: lockfile-only

.github/workflows/ci-post-merge.yml

@@ -36,6 +36,8 @@ jobs:
         run: sudo ifconfig lo0 alias 127.0.0.3
 
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Free Disk Space
         if: matrix.target.os == 'ubuntu-latest'
@@ -114,6 +116,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Install Rust (nightly)
         uses: actions-rust-lang/setup-rust-toolchain@2b1f5e9b395427c92ee4e3331786ca3c37afe2d7 # v1.16.0

.github/workflows/ci.yml

@@ -45,6 +45,8 @@ jobs:
         run: sudo ifconfig lo0 alias 127.0.0.3
 
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Free Disk Space
         if: matrix.target.os == 'ubuntu-latest'
@@ -122,6 +124,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Install Rust (nightly)
         uses: actions-rust-lang/setup-rust-toolchain@2b1f5e9b395427c92ee4e3331786ca3c37afe2d7 # v1.16.0

.github/workflows/coverage.yml

@@ -16,6 +16,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Install Rust
         uses: actions-rust-lang/setup-rust-toolchain@2b1f5e9b395427c92ee4e3331786ca3c37afe2d7 # v1.16.0

.github/workflows/lint.yml

@@ -12,11 +12,31 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  zizmor:
+    name: zizmor
+    permissions:
+      actions: read
+      contents: read
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - uses: zizmorcore/zizmor-action@b1d7e1fb5de872772f31590499237e7cce841e8e # v0.5.3
+        with:
+          advanced-security: false
+          annotations: true
+          version: v1.24.1
+
   fmt:
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - uses: actions-rust-lang/setup-rust-toolchain@2b1f5e9b395427c92ee4e3331786ca3c37afe2d7 # v1.16.0
         with:
@@ -34,6 +54,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - uses: actions-rust-lang/setup-rust-toolchain@2b1f5e9b395427c92ee4e3331786ca3c37afe2d7 # v1.16.0
         with: { components: clippy }
@@ -49,6 +71,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Install Rust (${{ vars.RUST_VERSION_EXTERNAL_TYPES }})
         uses: actions-rust-lang/setup-rust-toolchain@2b1f5e9b395427c92ee4e3331786ca3c37afe2d7 # v1.16.0
@@ -66,4 +90,6 @@ jobs:
           tool: cargo-check-external-types
 
       - name: check external types
-        run: just check-external-types-all +${{ vars.RUST_VERSION_EXTERNAL_TYPES }}
+        run: just check-external-types-all +"${RUST_VERSION_EXTERNAL_TYPES}"
+        env:
+          RUST_VERSION_EXTERNAL_TYPES: ${{ vars.RUST_VERSION_EXTERNAL_TYPES }}

zizmor.yml

@@ -0,0 +1,4 @@
+rules:
+  dependabot-cooldown:
+    config:
+      days: 3