Add cache for tests (#716)

Author: aloctavodia

.github/workflows/test.yml

@@ -31,6 +31,14 @@ jobs:
           python-version: ${{ matrix.python-version }}
           auto-update-conda: true
 
+      - name: Cache PyTensor NUMBA compilation artifacts
+        uses: actions/cache@v4
+        with:
+          path: ~/.pytensor/numba/
+          key: pytensor-numba-${{ runner.os }}-py${{ matrix.python-version }}-${{ hashFiles('requirements-dev.txt', 'pyproject.toml') }}
+          restore-keys: |
+            pytensor-numba-${{ runner.os }}-py${{ matrix.python-version }}-
+
       - name: Install preliz
         shell: bash -l {0}
         run: |