Point workflows at new python requirements file (#1035)

Fixes to the Check Secure and Packaging workflows to point them to the new python requirements file gha/scripts/requirements.txt.

Author: DellaBitta

.github/workflows/checks_secure.yml

@@ -34,7 +34,7 @@ jobs:
           python-version: 3.7
       - name: Install prerequisites
         if: steps.check.outputs.has-permission != 1 || github.event.pull_request.head.repo.full_name != github.repository
-        run: pip install -r scripts/gha/python_requirements.txt
+        run: pip install -r scripts/gha/requirements.txt
       - name: Dismiss reviews
         if: steps.check.outputs.has-permission != 1 || github.event.pull_request.head.repo.full_name != github.repository
         shell: bash

.github/workflows/cpp-packaging.yml

@@ -786,7 +786,7 @@ jobs:
     - name: Use GitHub API to start workflow
       shell: bash
       run: |
-        pip install -r scripts/gha/python_requirements.txt
+        pip install -r scripts/gha/requirements.txt
         if [[ -z ${USE_EXPANDED_MATRIX} ]]; then
           USE_EXPANDED_MATRIX=0
         fi