chore(deps): bump github/codeql-action init to match analyze (v4.37.6)

Bump github/codeql-action/init to 5595cca (v4.37.6) so it matches the
analyze bump already in this PR. init and analyze must be pinned to the
same version; a mismatch fails CodeQL with "Loaded a configuration file
for version '4.37.5', but running version '4.37.6'". This subsumes #4115.

Also group github/codeql-action* in dependabot.yml so future bumps of
init and analyze arrive as a single PR and can't drift apart again.

Assisted-by: GitHub Copilot (model: Claude Opus 4.8, autonomous)
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 6a01da34-7431-4ffc-84ee-e51ecf224334

Author: mnriem

.github/dependabot.yml

@@ -8,6 +8,10 @@ updates:
   - dependency-name: "github/gh-aw-actions/**"
   - dependency-name: "github/gh-aw-actions" # Managed by gh aw compile. Version-locked to the gh-aw compiler; do not bump.
   package-ecosystem: github-actions
+  groups:
+    codeql-action:
+      patterns:
+      - "github/codeql-action*"
   schedule:
     interval: weekly
 version: 2

.github/workflows/codeql.yml

@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@d1ba80a13dd99fba24a470575428917156a28b43 # v4
+        uses: github/codeql-action/init@5595ccaf912efad79be6eef63a5619ff05969be3 # v4
         with:
           languages: ${{ matrix.language }}