fix: install Python dependencies in CI workflows

Add requests to requirements.txt and pip install step to cleanup
and validate-bootstrapper workflows to fix ModuleNotFoundError.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sanmesh-kakade

.github/workflows/cleanup.yml

@@ -28,6 +28,9 @@ jobs:
         run: |
           echo '${{ toJson(secrets) }}' > secrets.json
 
+      - name: Install dependencies
+        run: pip install -r .github/workflows/innersourcing/requirements.txt
+
       - name: Execute cleanup script
         run: |
           set -e

.github/workflows/innersourcing/requirements.txt

@@ -1,2 +1,3 @@
 boto3
 pyyaml
+requests

.github/workflows/validate-bootstrapper.yml

@@ -22,6 +22,9 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
+      - name: Install dependencies
+        run: pip install -r .github/workflows/innersourcing/requirements.txt
+
       - name: Run validate-bootstrapper script
         id: run
         env: