Fix spacing in backport-bot.yml

Author: rwinch

.github/workflows/backport-bot.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Download BackportBot
         run: wget https://github.com/spring-io/backport-bot/releases/download/latest/backport-bot-0.0.1-SNAPSHOT.jar
       - name: Backport
-          env:
-            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-            GITHUB_EVENT: ${{ toJSON(github.event) }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_EVENT: ${{ toJSON(github.event) }}
         run: java -jar backport-bot-0.0.1-SNAPSHOT.jar --github.accessToken="$GITHUB_TOKEN" --github.event_name "$GITHUB_EVENT_NAME" --github.event "$GITHUB_EVENT"