Set the bot username

Signed-off-by: Nikolai Rodionov <allanger@badhouseplants.net>

.woodpecker/go-generate.yaml

@@ -35,8 +35,8 @@ steps:
       - git -C ./target add .
       - |-
         git -C ./target commit --allow-empty \
-          -m "${CI_COMMIT_MESSAGE}" \
-          -m "By ${CI_COMMIT_AUTHOR_EMAIL}" \
+          -m "Update protobuf definitions: ${CI_COMMIT_SHA:0:8}" \
+          -m "By ${CI_COMMIT_AUTHOR}" \
           -m "Commit link: ${CI_REPO_URL}/commit/${CI_COMMIT_SHA}" \
           -m "Pipeline link: ${CI_PIPELINE_URL}"
       - git -C ./target push --set-upstream origin $CI_COMMIT_BRANCH