ci(integration): use matrix value for opensearch version (opensearch-project#400)

Signed-off-by: florian <florian@harfanglab.fr>

Author: florianvazelle

.github/workflows/integration.yml

@@ -15,5 +15,5 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Integ OpenSearch secured=${{ matrix.secured }} version=${{matrix.entry.opensearch_version}}
-        run: "./.ci/run-tests ${{ matrix.secured }} ${{ matrix.entry.opensearch_version }}"
+      - name: Integ OpenSearch secured=${{ matrix.secured }} version=${{ matrix.opensearch_version }}
+        run: "./.ci/run-tests ${{ matrix.secured }} ${{ matrix.opensearch_version }}"