Fix how multiple paths are specified for setup-python's cache-dependency-path

Author: brettcannon

.github/actions/build-vsix/action.yml

@@ -27,7 +27,10 @@ runs:
       with:
         python-version: 3.6
         cache: 'pip'
-        cache-dependency-path: ['requirements.txt', 'build/debugger-install-requirements.txt', 'jedils_requirements.txt']
+        cache-dependency-path: |
+          requirements.txt
+          build/debugger-install-requirements.txt
+          jedils_requirements.txt
 
     - name: Upgrade Pip
       run: python -m pip install -U pip

.github/actions/smoke-tests/action.yml

@@ -23,7 +23,10 @@ runs:
       with:
         python-version: '3.9'
         cache: 'pip'
-        cache-dependency-path: ['build/test-requirements.txt', 'requirements.txt', 'build/smoke-test-requirements.txt']
+        cache-dependency-path: |
+          build/test-requirements.txt
+          requirements.txt
+          build/smoke-test-requirements.txt
 
     - name: Install dependencies (npm ci)
       run: npm ci --prefer-offline

.github/workflows/pr-check.yml

@@ -376,7 +376,11 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           cache: 'pip'
-          cache-dependency-path: ['requirements.txt', 'jedils_requirements.txt', 'build/test-requirements.txt', 'build/functional-test-requirements.txt']
+          cache-dependency-path: |
+            requirements.txt
+            jedils_requirements.txt
+            build/test-requirements.txt
+            build/functional-test-requirements.txt
 
       - name: Install Python requirements
         run: |