Add caching of uv dependencies (#208)

.github/workflows/test.yaml

@@ -37,6 +37,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     timeout-minutes: 10
 
+    env:
+      UV_CACHE_DIR: /tmp/.uv-cache
+
     steps:
       - uses: actions/checkout@v4
 
@@ -49,10 +52,22 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
+      - name: Restore uv cache
+        uses: actions/cache@v4
+        with:
+          path: /tmp/.uv-cache
+          key: uv-${{ runner.os }}-${{ hashFiles('uv.lock') }}
+          restore-keys: |
+            uv-${{ runner.os }}-${{ hashFiles('uv.lock') }}
+            uv-${{ runner.os }}
+
       - name: Install packages
         run: |
           uv sync --all-extras --dev
 
       - name: Run tests
         run: |
           uv run -- pytest tests
+
+      - name: Minimize uv cache
+        run: uv cache prune --ci