Upgrade to 2.18.0 GA.

Signed-off-by: dblock <[email protected]>

.github/workflows/test-spec.yml

@@ -27,29 +27,29 @@ jobs:
             admin_password: admin
           - version: 2.0.0
             admin_password: admin
-          - version: 2.16.0
-          - version: 2.16.0
+          - version: 2.18.0
+          - version: 2.18.0
             tests: plugins/index_state_management
-          - version: 2.16.0
+          - version: 2.18.0
             tests: plugins/ml
-          - version: 2.16.0
+          - version: 2.18.0
             tests: routing
-          - version: 2.16.0
+          - version: 2.18.0
             tests: snapshot
-          - version: 2.17.0
+          - version: 2.18.0
             tests: plugins/streaming
-          - version: 2.17.0
+          - version: 2.18.0
             tests: plugins/notifications
-          - version: 2.17.0
+          - version: 2.18.0
             tests: plugins/query_insights
-          - version: 2.17.0
-            tests: plugins/workload-management
           - version: 2.18.0
+            tests: plugins/workload-management
+          - version: 2.19.0
             hub: opensearchstaging
-            ref: '@sha256:57a1cd1142d68c203e2e4aa0666d9a691e1e409a5d14aa4a8f5044036f05cf06'
+            ref: "@sha256:4da23e0137b2b67206d23b36fcf0914cc39b3bf19310c782f536e4934b86f6cc"
           - version: 3.0.0
             hub: opensearchstaging
-            ref: '@sha256:727643acdfebed77bfdb26362dbcff536b7ea02a0cc4ae2da2521729171333de'
+            ref: "@sha256:6c5707c7a297e117292ef860f763dc6c39d2b110183647301a602fcbedb31ff1"
 
     name: test-opensearch-spec (version=${{ matrix.entry.version }}, hub=${{ matrix.entry.hub || 'opensearchproject' }}, tests=${{ matrix.entry.tests || 'default' }})
     runs-on: ubuntu-latest
@@ -68,7 +68,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '20'
+          node-version: "20"
 
       - name: Install Dependencies
         run: npm ci