ci: fix dependency caching

Author: regisb

.github/workflows/release.yml

@@ -40,6 +40,7 @@ jobs:
         with:
           python-version: 3.7
           cache: 'pip'
+          cache-dependency-path: requirements/dev.txt
       - name: Upgrade pip and setuptools
         # https://pypi.org/project/pip/
         # https://pypi.org/project/setuptools/

.github/workflows/test.yml

@@ -16,6 +16,7 @@ jobs:
         with:
           python-version: 3.9
           cache: 'pip'
+          cache-dependency-path: requirements/dev.txt
       - name: Upgrade pip
         run: python -m pip install --upgrade pip setuptools==44.0.0
       - name: Install dependencies