chore(ci): pin action version comments to immutable patch tags (#1636)

Tightens `# v6`/`# v3` floating-major comments on SHA-pinned actions to
their exact patch-level tags (`v6.0.2`, `v6.2.0`, `v3.0.1`). Same SHAs,
no behavior change — just removes ambiguity about which release the pin
corresponds to, and keeps the version comment truthful if the upstream
major ever moves.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: wochinge

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
   linting:
     runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Install uv and set Python version
@@ -37,7 +37,7 @@ jobs:
   type-checking:
     runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Install uv and set Python version
@@ -78,7 +78,7 @@ jobs:
 
     name: Unit tests on Python ${{ matrix.python-version }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Install uv and set Python version
@@ -141,7 +141,7 @@ jobs:
 
     name: ${{ matrix.job_name }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Install uv and set Python version

.github/workflows/codeql.yml

@@ -55,7 +55,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       with:
         persist-credentials: false
 

.github/workflows/package-availability-check.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies using pip

.github/workflows/release.yml

@@ -64,7 +64,7 @@ jobs:
           INPUTS_CONFIRM_MAJOR: ${{ inputs.confirm_major }}
 
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_ACCESS_TOKEN }}
@@ -321,7 +321,7 @@ jobs:
 
       - name: Notify Slack on success
         if: success()
-        uses: slackapi/slack-github-action@af78098f536edbc4de71162a307590698245be95 # v3
+        uses: slackapi/slack-github-action@af78098f536edbc4de71162a307590698245be95 # v3.0.1
         with:
           webhook: ${{ secrets.SLACK_WEBHOOK_RELEASES }}
           webhook-type: incoming-webhook
@@ -405,7 +405,7 @@ jobs:
 
       - name: Notify Slack on failure
         if: failure()
-        uses: slackapi/slack-github-action@af78098f536edbc4de71162a307590698245be95 # v3
+        uses: slackapi/slack-github-action@af78098f536edbc4de71162a307590698245be95 # v3.0.1
         with:
           webhook: ${{ secrets.SLACK_WEBHOOK_ENGINEERING }}
           webhook-type: incoming-webhook

.github/workflows/zizmor.yml

@@ -22,7 +22,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Run zizmor