Update K-9 Mail to 8.0b4

metadata/com.fsck.k9.yml

@@ -1459,6 +1459,19 @@ Builds:
     scandelete:
       - build-plugin/build
 
+  - versionName: 8.0b4
+    versionCode: 39008
+    commit: K9MAIL_8_0b4
+    subdir: app-k9mail
+    gradle:
+      - yes
+    rm:
+      - feature/funding/googleplay
+    prebuild: sed -i -e '/maven\.mozilla\.org\/maven2/d ; /glean/d ; /app-thunderbird/d
+      ; /googleplay/d' ../settings.gradle.kts
+    scandelete:
+      - build-plugin/build
+
 MaintainerNotes: |-
   Use output instead of subdir to make gradlew-fdroid correctly determine the gradle version to be used.
   It doesn't work when using subdir because we are two levels deep into the directory structure.