add NonFreeDep to SMS Backup+ (requires Google Play Services)

metadata/com.zegoggles.smssync.yml

@@ -1,3 +1,5 @@
+AntiFeatures:
+  - NonFreeDep
 Categories:
   - Phone & SMS
 License: Apache-2.0
@@ -20,6 +22,8 @@ Description: |-
 
     See the source code page for more detailed instructions and FAQ.
 
+    <b>NonFreeDep:</b> Requires Google Play Services
+
 RepoType: git
 Repo: https://github.com/jberkel/sms-backup-plus.git
 
@@ -55,7 +59,7 @@ Builds:
 
   - versionName: 1.5.5
     versionCode: 1531
-    disable: doesn't build
+    disable: does not build
     commit: 1.5.5
     gradle:
       - yes
@@ -303,6 +307,9 @@ Builds:
     gradle:
       - yes
 
+MaintainerNotes: Uses Firebase Jobdispatcher which requires Google Play Services,
+    see https://gitlab.com/fdroid/fdroiddata/-/issues/2294
+
 AutoUpdateMode: Version %v
 UpdateCheckMode: Tags ^[0-9.]*$
 CurrentVersion: 1.5.11