Attempt to cache Vim for faster runs

Author: S0AndS0

.github/workflows/test.yaml

@@ -31,6 +31,12 @@ jobs:
         with:
           fetch-depth: 0
 
+      - uses: actions/cache@v4
+        id: cache-test-dependencies
+        with:
+          path: /tmp/vim
+          key: ubuntu-latest_v9.1.0774
+
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'