[MRG] update actions to make sure right version(s) are being used (#258)

* Bump actions/cache from 2 to 3

Bumps [actions/cache](https://github.com/actions/cache) from 2 to 3.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v2...v3)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

* check python version etc

* add shell

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/run_tests.yml

@@ -38,7 +38,7 @@ jobs:
         shell: bash
 
       - name: Cache Conda env
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ${{ env.CONDA }}/envs
           key:
@@ -59,14 +59,29 @@ jobs:
 #      - name: Install coverage dependencies
 #        run: python -m pip install pytest-cov
 
+      - name: Show Python version
+        shell: bash -el {0}
+        run: python -V
+
+      - name: Conda info
+        shell: bash -el {0}
+        run: conda info
+
+      - name: Conda list
+        shell: bash -el {0}
+        run: conda list
+
       - name: Install grist
+        shell: bash -el {0}
         run: python -m pip install -e .
 
       - name: Install grist test deps
+        shell: bash -el {0}
         run: python -m pip install -e .[test]
 
 #      - run: pip check
       - run: pytest tests
+        shell: bash -el {0}
 
 #      - run: pytest tests --cov=.