chore(root): replace deprecated app-id with client-id in audit-api-spec

The actions/create-github-app-token action deprecated the app-id input
in favour of client-id. Every CI run produced a warning annotation
"Input app-id has been deprecated with message. Use client-id instead."

Rename app-id to client-id and upgrade to v3 to eliminate the warning.

Ticket: AI-254

Author: ericcrosson-bitgo

.github/workflows/audit-api-spec.yaml

@@ -234,9 +234,9 @@ jobs:
           EOF
       - name: Generate GitHub App Token
         id: generate-github-app-token
-        uses: actions/create-github-app-token@v2
+        uses: actions/create-github-app-token@v3
         with:
-          app-id: ${{ env.STATIC_ANALYSIS_BOT_APP_ID }}
+          client-id: ${{ env.STATIC_ANALYSIS_BOT_APP_ID }}
           private-key: ${{ secrets.STATIC_ANALYSIS_BOT_PRIVATE_KEY }}
           owner: bitgo
           repositories: |