Alpha workflows: use a short SHA here

Author: michaelklishin

.github/workflows/release-4.0.x-alphas.yaml

@@ -28,4 +28,4 @@ jobs:
             -H "Authorization: Bearer ${{ secrets.RABBITMQCI_BOT_TOKEN }}" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
             https://api.github.com/repos/${{ env.DEV_WORKFLOW_REPOSITORY }}/dispatches \
-            -d '{ "event_type": "new_4.0.x_alpha", "client_payload": {"release_repository": "${{ env.DEV_WORKFLOW_REPOSITORY }}", "release_description": "Commit: https://github.com/rabbitmq/rabbitmq-server/commit/${{ github.sha }}, pushed at: ${{ github.event.repository.pushed_at }}", "prerelease": true, "prerelease_kind": "alpha", "prerelease_identifier": "${{ env.PRERELEASE_IDENTIFIER }}", "release_title": "RabbitMQ ${{ vars.SERVER_40_NEXT_PATCH_VERSION }}-alpha.${{ github.sha }} (from ${{ github.event.repository.pushed_at }})", "base_version": "${{ vars.SERVER_41_NEXT_PATCH_VERSION }}" }}'
+            -d '{ "event_type": "new_4.0.x_alpha", "client_payload": {"release_repository": "${{ env.DEV_WORKFLOW_REPOSITORY }}", "release_description": "Commit: https://github.com/rabbitmq/rabbitmq-server/commit/${{ github.sha }}, pushed at: ${{ github.event.repository.pushed_at }}", "prerelease": true, "prerelease_kind": "alpha", "prerelease_identifier": "${{ env.PRERELEASE_IDENTIFIER }}", "release_title": "RabbitMQ ${{ vars.SERVER_40_NEXT_PATCH_VERSION }}-alpha.${{ env.PRERELEASE_IDENTIFIER }} (from ${{ github.event.repository.pushed_at }})", "base_version": "${{ vars.SERVER_41_NEXT_PATCH_VERSION }}" }}'

.github/workflows/release-4.1.x-alphas.yaml

@@ -29,4 +29,4 @@ jobs:
             -H "Authorization: Bearer ${{ secrets.RABBITMQCI_BOT_TOKEN }}" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
             https://api.github.com/repos/${{ env.DEV_WORKFLOW_REPOSITORY }}/dispatches \
-            -d '{ "event_type": "new_4.1.x_alpha", "client_payload": {"release_repository": "${{ env.DEV_WORKFLOW_REPOSITORY }}", "release_description": "Commit: https://github.com/rabbitmq/rabbitmq-server/commit/${{ github.sha }}, pushed at: ${{ github.event.repository.pushed_at }}", "prerelease": true, "prerelease_kind": "alpha", "prerelease_identifier": "${{ env.PRERELEASE_IDENTIFIER }}", "release_title": "RabbitMQ ${{ vars.SERVER_41_NEXT_PATCH_VERSION }}-alpha.${{ github.sha }} (from ${{ github.event.repository.pushed_at }})", "base_version": "${{ vars.SERVER_41_NEXT_PATCH_VERSION }}" }}'
+            -d '{ "event_type": "new_4.1.x_alpha", "client_payload": {"release_repository": "${{ env.DEV_WORKFLOW_REPOSITORY }}", "release_description": "Commit: https://github.com/rabbitmq/rabbitmq-server/commit/${{ github.sha }}, pushed at: ${{ github.event.repository.pushed_at }}", "prerelease": true, "prerelease_kind": "alpha", "prerelease_identifier": "${{ env.PRERELEASE_IDENTIFIER }}", "release_title": "RabbitMQ ${{ vars.SERVER_41_NEXT_PATCH_VERSION }}-alpha.${{ env.PRERELEASE_IDENTIFIER }} (from ${{ github.event.repository.pushed_at }})", "base_version": "${{ vars.SERVER_41_NEXT_PATCH_VERSION }}" }}'