ci(deps): bump codeql-action to 4.36.3 and group action bumps (skyllc-ai#536)

Bump github/codeql-action `init` + `analyze` from 4.36.2 to 4.36.3
together. CodeQL requires all `codeql-action` steps to use the same
version; Dependabot had opened them as two separate PRs (skyllc-ai#533 init,
skyllc-ai#534 analyze), so each branch carried a version mismatch that failed
"Not all steps use the same version" and errored on SARIF upload,
blocking both.

Also add a `groups:` to the github-actions Dependabot config so all
action bumps arrive as one PR, keeping multi-step actions in lockstep
and preventing this split from recurring. Supersedes skyllc-ai#533 and skyllc-ai#534.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: githubrobbi

.github/dependabot.yml

@@ -65,3 +65,15 @@ updates:
     commit-message:
       prefix: "ci"
       include: "scope"
+    # Group ALL github-actions bumps into a single PR. Multi-step actions
+    # (notably github/codeql-action's `init` + `analyze`, which MUST share
+    # the same version or CodeQL fails "Not all steps use the same version"
+    # and the SARIF upload errors out) were previously split into separate
+    # per-step PRs that each carried a version mismatch and could never go
+    # green. Grouping everything keeps such steps in lockstep. Actions are
+    # SHA-pinned and gated by the Dependabot Actions Review check, so a
+    # single combined PR is safe to review as one unit.
+    groups:
+      github-actions:
+        patterns:
+          - "*"

.github/workflows/codeql.yml

@@ -138,7 +138,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
+        uses: github/codeql-action/init@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a # v4.36.3
         with:
           languages: ${{ matrix.language }}
           # Rust support (public preview) currently only accepts
@@ -153,6 +153,6 @@ jobs:
           # queries: security-and-quality
 
       - name: Perform CodeQL analysis
-        uses: github/codeql-action/analyze@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
+        uses: github/codeql-action/analyze@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a # v4.36.3
         with:
           category: "/language:${{ matrix.language }}"