pin rust cache

Author: pavelzw

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
         uses: prefix-dev/setup-pixi@ba3bb36eb2066252b2363392b7739741bb777659
         with:
           environments: default lint
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@23bce251a8cd2ffc3c1075eaa2367cf899916d84
         with:
           key: "pre-commit"
       - name: pre-commit
@@ -39,7 +39,7 @@ jobs:
           fetch-depth: 0
       - name: Set up pixi
         uses: prefix-dev/setup-pixi@ba3bb36eb2066252b2363392b7739741bb777659
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@23bce251a8cd2ffc3c1075eaa2367cf899916d84
         with:
           key: "tests"
       - name: Run test