improve auto-generated release notes

[ci skip]

.github/release.yml

@@ -0,0 +1,23 @@
+# .github/release.yml
+# see https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes#configuring-automatically-generated-release-notes
+
+changelog:
+  exclude:
+    authors:
+      - cryptobot
+      - dependabot
+      - github-actions
+  categories:
+    - title: What's New 🎉
+      labels:
+        - release-notes:feature
+    - title: Bugfixes 🐛
+      labels:
+        - release-notes:bugfix
+    - title: Other Changes 📎
+      labels:
+        - "*"
+      exclude:
+        labels:
+          - release-notes:feature
+          - release-notes:bugfix

.github/workflows/build.yml

@@ -53,4 +53,8 @@ jobs:
           body: |-
             :construction: Work in Progress
             
+            Please be patient, the builds are still running. We will publish new versions of Cryptomator here in a few moments.
+            
+            As usual, the GPG signatures can be checked using [our public key `5811 7AFA 1F85 B3EE C154  677D 615D 449F E6E6 A235`](https://gist.github.com/cryptobot/211111cf092037490275f39d408f461a).
             ---
+            <!-- Don't forget to include the 💾 SHA-256 checksums of release artifacts: -->