chore(ci): improve build and test workflow (#125)

.github/actions/install-canvas/action.yml

@@ -0,0 +1,25 @@
+name: "Install Canvas"
+description: "Installs Canvas dependencies"
+
+
+runs:
+  using: "composite"
+  steps:
+    # Cache the project dependencies (everything in pyproject.toml).
+    - name: Cache project dependencies
+      id: cache-deps
+      uses: actions/cache@v4
+      with:
+        path: .venv
+        key: project-dependencies-${{ hashFiles('**/poetry.lock') }}
+
+    # Install project dependencies (bypassing the project, because we don't want to cache the Canvas code).
+    - name: Install Dependencies
+      run: poetry install --no-interaction --no-root
+      shell: bash
+      if: steps.cache-deps.outputs.cache-hit != 'true'
+
+    # Install the project to make sure everything works and is synced.
+    - name: Install Canvas
+      shell: bash
+      run: poetry install --no-interaction

.github/actions/install-python-and-poetry/action.yml

@@ -5,7 +5,7 @@ inputs:
   POETRY_VERSION:
     description: "Poetry version to install"
     required: false
-    default: "1.7.1"
+    default: "1.8.3"
   PYTHON_VERSION:
     description: "Version range or exact version of Python or PyPy to use, using SemVer's version range syntax. Reads from .python-version if unset."
     required: false
@@ -28,7 +28,7 @@ runs:
       # This prevents the workflow from installing Poetry every time, which can be slow.
     - name: Cache poetry install
       id: cache-poetry
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.local
         key: poetry-${{inputs.POETRY_VERSION}}

.github/workflows/build-and-test.yml

@@ -11,12 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-
       - uses: ./.github/actions/install-python-and-poetry
-
-      - name: Install canvas-plugins
-        shell: bash
-        run: poetry install --no-interaction
+      - uses: ./.github/actions/install-canvas
 
       # Run Pytest unit tests via Poetry.
       - name: Run Pytest unit tests