encode event json to avoid whitespace errors

Author: qrkourier

.github/workflows/zhook.yml

@@ -64,7 +64,7 @@ jobs:
         env:
           INPUT_ZITIID: ${{ secrets.ZITI_MATTERMOST_IDENTITY }}
           INPUT_WEBHOOKURL: ${{ secrets.ZHOOK_URL_DEV_NOTIFICATIONS }}
-          INPUT_EVENTJSON: ${{ toJson(github.event) }}
+          INPUT_EVENTJSON: ${{ toBase64(toJson(github.event)) }}
           INPUT_SENDERUSERNAME: GitHubZ
           INPUT_SENDERICONURL: https://github.com/fluidicon.png
           INPUT_ZITILOGLEVEL: 6