ci: bump actions/checkout to v7 across all workflows

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Start PostgreSQL ${{ matrix.pg }}
         run: pg-start ${{ matrix.pg }}
       - name: Check out the repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
       - name: Test on PostgreSQL ${{ matrix.pg }}
         run: pg-build-test
 

.github/workflows/claude-code-review.yml

@@ -78,12 +78,18 @@ jobs:
         if: steps.gate.outputs.decision == 'run'
         # Intentionally tracks the major-version tag (not a pinned SHA) so
         # upstream fixes are picked up automatically.
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 1
           persist-credentials: false
+          # v7 refuses to check out fork PR code under pull_request_target
+          # unless explicitly opted in. Safe here: this job is already gated
+          # to the trusted jnasbyupgrade fork only (see the `if:` above), the
+          # checkout is read-only (persist-credentials: false), and PR code is
+          # never built or executed.
+          allow-unsafe-pr-checkout: true
 
       - name: Run Claude Code Review
         if: steps.gate.outputs.decision == 'run'

.github/workflows/claude.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Checkout repository
         # Intentionally tracks the major-version tag (not a pinned SHA) so
         # upstream fixes are picked up automatically.
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 1
           persist-credentials: false