Update crytic/slither-action action to v0.3.0 (#4064)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/checks.yml

@@ -82,7 +82,7 @@ jobs:
       - name: Set up environment
         uses: ./.github/actions/setup
       - run: rm foundry.toml
-      - uses: crytic/slither-action@v0.2.0
+      - uses: crytic/slither-action@v0.3.0
 
   codespell:
     if: github.repository != 'OpenZeppelin/openzeppelin-contracts-upgradeable'