Fix invocation of install-engine from CI workflow

Signed-off-by: ikolomi <ikolomin@amazon.com>

Author: ikolomi

.github/workflows/ci.yml

@@ -70,7 +70,7 @@ jobs:
             ${{ runner.os }}-maven-
 
       - name: Install engine
-        uses: .github/workflows/actions/install-engine
+        uses: ./.github/workflows/actions/install-engine
         with:
           engine-type: ${{ matrix.engine }}
           engine-tag: ${{ matrix.version }}