encode event json to avoid whitespace errors

Author: qrkourier

.github/workflows/zhook.yml

@@ -64,7 +64,6 @@ jobs:
         env:
           INPUT_ZITIID: ${{ secrets.ZITI_MATTERMOST_IDENTITY }}
           INPUT_WEBHOOKURL: ${{ secrets.ZHOOK_URL_DEV_NOTIFICATIONS }}
-          INPUT_EVENTJSON: ${{ toJson(github.event) }}
           INPUT_SENDERUSERNAME: GitHubZ
           INPUT_SENDERICONURL: https://github.com/fluidicon.png
           INPUT_ZITILOGLEVEL: 6
@@ -75,7 +74,7 @@ jobs:
           cat > /tmp/docker.env << EOF
           INPUT_ZITIID=${INPUT_ZITIID}
           INPUT_WEBHOOKURL=${INPUT_WEBHOOKURL}
-          INPUT_EVENTJSON=${INPUT_EVENTJSON}
+          INPUT_EVENTJSON=$(base64 -w 0 <<< '${{ toJson(github.event) }}')
           INPUT_SENDERUSERNAME=${INPUT_SENDERUSERNAME}
           INPUT_SENDERICONURL=${INPUT_SENDERICONURL}
           INPUT_ZITILOGLEVEL=${INPUT_ZITILOGLEVEL}