chore(deps): update actions/cache action to v5

GitOrigin-RevId: 3d4ab71ed3280c5d836e27285d20f7d8ecf07202

Author: ory-bot

.github/workflows/ci.yaml

@@ -151,7 +151,7 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: "1.25"
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: ./test/e2e/hydra
           key: ${{ runner.os }}-hydra