fix filename expression, job name, and slack config

Author: tobihagemann

.github/workflows/update-desktop.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   create-pr:
-    name: Create PR for aur repo
+    name: Create PR for desktop release
     runs-on: ubuntu-latest
     permissions:
       contents: write
@@ -44,7 +44,7 @@ jobs:
             local key="$1"
             local url="$2"
             local digest="$3"
-            local filename_expr="${4:-'(env(RELEASE_URL) | split(\"/\") | .[-1])'}"
+            local filename_expr="${4:-(env(RELEASE_URL) | split(\"/\") | .[-1])}"
 
             if [ "$url" = "null" ] || [ -z "$url" ]; then
               return
@@ -103,10 +103,10 @@ jobs:
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_CRYPTOMATOR_DESKTOP }}
           SLACK_USERNAME: 'Cryptobot'
-          SLACK_ICON: false
+          SLACK_ICON: ''
           SLACK_ICON_EMOJI: ':bot:'
           SLACK_CHANNEL: 'cryptomator-desktop'
-          SLACK_TITLE: "Website update PR created for release ${{ github.event.client_payload.version }} ."
+          SLACK_TITLE: "Website update PR created for release ${{ github.event.client_payload.version }}."
           SLACK_MESSAGE: "See <${{ steps.create-pr.outputs.url }}|PR> on how to proceed."
-          SLACK_FOOTER: false
+          SLACK_FOOTER: ''
           MSG_MINIMAL: true