NHSO-0000: Update actions/cache task to v3.

.github/workflows/continuous-integration.yml

@@ -12,10 +12,10 @@ jobs:
         with:
           fetch-depth: 0  # This causes all history to be fetched, which is required for calculate-version to function
 
-      - name: Install Python 3.8
+      - name: Install Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
 
       - name: Update apt repositories
         run: sudo apt update
@@ -33,16 +33,16 @@ jobs:
         run: python -m pip install --upgrade pip setuptools wheel
 
       - name: Install poetry
-        run: pip install poetry
+        run: pip install "poetry<2.0.0"
 
       - name: Cache poetry packages
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         with:
           path: ~/.cache/pypoetry
           key: ${{ runner.os }}-build-cache-poetry-packages-${{ hashFiles('**/poetry.lock') }}
 
       - name: Cache node modules
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         with:
           path: ~/.npm
           key: ${{ runner.os }}-build-cache-npm-packages-${{ hashFiles('**/package-lock.json') }}