Use correct 2.x version for Dashboards binary

Signed-off-by: Daniel Widdis <widdis@gmail.com>

Author: dbwiddis

.github/workflows/verify-binary-installation.yml

@@ -2,7 +2,7 @@ name: 'Install Dashboards with Plugin via Binary'
 
 on: [push, pull_request]
 env:
-  OPENSEARCH_VERSION: '3.0.0'
+  OPENSEARCH_VERSION: '2.14.0'
   CI: 1
   # avoid warnings like "tput: No value for $TERM and no -T specified"
   TERM: xterm
@@ -51,4 +51,4 @@ jobs:
       - name: Health check 
         run: |
           timeout 300 bash -c 'while [[ "$(curl http://localhost:5601/api/status | jq -r '.status.overall.state')" != "green" ]]; do sleep 5; done'
-        shell: bash
+        shell: bash