update to latest actions/cache due to deprecations

Author: kevdkr

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
           java-version: [email protected]
 
       - name: Cache sbt
-        uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
         with:
           path: |
             ~/.sbt