Merge pull request #101 from matplotlib/dependabot/github_actions/actions/cache-4

Bump actions/cache from 3 to 4

Author: kthyng

.github/workflows/test.yaml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache conda
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           # Increase this value to reset cache if ci/environment.yml has not changed
           CACHE_NUMBER: 0