ci: also append git SHA to version on push-to-main builds

.github/workflows/build.yml

@@ -38,6 +38,12 @@ jobs:
                   SUFFIX="PR${PR_NUM}-${SHA}"
                   jq --arg suffix "$SUFFIX" '.version = .version + "-" + $suffix' manifest.json > manifest.tmp && mv manifest.tmp manifest.json
 
+            - name: Append git SHA to version
+              if: github.event_name == 'push'
+              run: |
+                  SHA=$(echo "${{ github.sha }}" | cut -c1-7)
+                  jq --arg sha "$SHA" '.version = .version + "-" + $sha' manifest.json > manifest.tmp && mv manifest.tmp manifest.json
+
             - name: Build and package plugin
               run: make package