ci/GHA: pass zizmor a GH token, fix warnings found

For a complete, online, check.

After this patch the check takes 25s, up from a fraction of a second.

Closes #1694

.github/workflows/ci.yml

@@ -52,6 +52,8 @@ jobs:
           reuse lint
 
       - name: 'zizmor GHA'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
           zizmor --pedantic .github/workflows/*.yml

.github/workflows/codeql.yml

@@ -33,13 +33,13 @@ jobs:
           persist-credentials: false
 
       - name: 'initialize'
-        uses: github/codeql-action/init@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3
+        uses: github/codeql-action/init@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3.30.5
         with:
           languages: actions
           queries: security-extended
 
       - name: 'perform analysis'
-        uses: github/codeql-action/analyze@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3
+        uses: github/codeql-action/analyze@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3.30.5
 
   c:
     name: 'C'
@@ -67,7 +67,7 @@ jobs:
           persist-credentials: false
 
       - name: 'initialize'
-        uses: github/codeql-action/init@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3
+        uses: github/codeql-action/init@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3.30.5
         with:
           languages: cpp
           build-mode: manual
@@ -88,4 +88,4 @@ jobs:
           fi
 
       - name: 'perform analysis'
-        uses: github/codeql-action/analyze@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3
+        uses: github/codeql-action/analyze@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3.30.5