[Backport 2.x] Publish snapshots from 2.x branch (#451)

.github/workflows/publish-snapshots.yml

@@ -0,0 +1,34 @@
+name: Publish snapshots to maven
+
+on:
+  push:
+    branches:
+      - main
+      - '2.x'
+
+jobs:
+  build-and-publish-snapshots:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          java-version: '11'
+          distribution: 'temurin'
+          cache: 'gradle'
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          role-to-assume: ${{ secrets.PUBLISH_SNAPSHOTS_ROLE }}
+          aws-region: us-east-1
+      - name: publish snapshots to maven
+        run: |
+          export SONATYPE_USERNAME=$(aws secretsmanager get-secret-value --secret-id maven-snapshots-username --query SecretString --output text)
+          export SONATYPE_PASSWORD=$(aws secretsmanager get-secret-value --secret-id maven-snapshots-password --query SecretString --output text)
+          echo "::add-mask::$SONATYPE_USERNAME"
+          echo "::add-mask::$SONATYPE_PASSWORD"
+          ./gradlew --no-daemon publishPublishMavenPublicationToSnapshotsRepository

CHANGELOG.md

@@ -4,6 +4,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased]
 
 ### Added
+- Add workflow to publish snapshots via GHA ([#454](https://github.com/opensearch-project/opensearch-java/pull/454))
 
 ### Dependencies