Adds a nightly build to produce Maven SNAPSHOT artifacts (#5805)

Adds a nightly build to produce Maven SNAPSHOT artifacts to the Maven Central snapshots repo.

Signed-off-by: David Venable <dlv@amazon.com>

Author: dlvenable

.github/workflows/maven-publish-snapshot.yml

@@ -0,0 +1,38 @@
+name: Publish SNAPSHOT artifacts to Maven snapshot repository.
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 5 * * Mon-Fri'
+
+jobs:
+  build-and-publish-snapshots:
+    runs-on: ubuntu-latest
+
+    permissions:
+      id-token: write
+      contents: write
+
+    steps:
+      - name: Set up JDK 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 11
+
+      - name: Checkout Data Prepper
+        uses: actions/checkout@v4
+
+      - name: Load secret
+        uses: 1password/load-secrets-action@v2
+        with:
+          # Export loaded secrets as environment variables
+          export-env: true
+        env:
+          OP_SERVICE_ACCOUNT_TOKEN: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
+          SONATYPE_USERNAME: op://opensearch-infra-secrets/maven-central-portal-credentials/username
+          SONATYPE_PASSWORD: op://opensearch-infra-secrets/maven-central-portal-credentials/password
+
+      - name: Publish snapshots to Maven
+        run: |
+          ./gradlew --no-daemon publishAllPublicationsToSnapshotsRepository

buildSrc/src/main/groovy/data-prepper.publish.gradle

@@ -17,7 +17,7 @@ afterEvaluate {
             }
             maven {
                 name = 'snapshots'
-                url = 'https://aws.oss.sonatype.org/content/repositories/snapshots'
+                url = 'https://central.sonatype.com/repository/maven-snapshots/'
                 credentials {
                     username "$System.env.SONATYPE_USERNAME"
                     password "$System.env.SONATYPE_PASSWORD"