Declare setuptools dep, use python 3.10 for tests

setuptools is used for pkg_resources. Since it's deprecated,
this code should be rewritten, but for now at least declare
the dep so that the current code is usable.

.github/workflows/ci.yml

@@ -16,11 +16,7 @@ jobs:
  uses: actions/setup-python@v4
  with:
  python-version: |
- 3.8
- 3.9
  3.10
- 3.11
- 3.12
 
  - name: Install dependencies
  run: |

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
  - name: Set up Python
  uses: actions/setup-python@v4
  with:
- python-version: 3.12
+ python-version: 3.10
 
  - name: Install dependencies
  run: |

requirements.txt

@@ -2,3 +2,4 @@ jsonschema
 virtualenv-api
 semver
 astroid
+setuptools