feat: Bump version number, update changelogs

android/fastlane/metadata/android/de-DE/changelogs/4013.txt

@@ -0,0 +1 @@
+- Beheben eines Fehlers durch welchen Dokumente nicht mehr bearbeitet werden konnten

android/fastlane/metadata/android/en-US/changelogs/4013.txt

@@ -0,0 +1 @@
+- Fixed a bug which caused documents not being editable anymore

lib/features/changelogs/view/changelog_dialog.dart

@@ -63,6 +63,7 @@ class ChangelogDialog extends StatelessWidget {
 }
 
 const _versionNumbers = {
+  "4013": "3.1.6",
   "4003": "3.1.5",
   "58": "3.1.4",
   "57": "3.1.3",

pubspec.yaml

@@ -15,7 +15,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 3.1.5+400
+version: 3.1.6+401
 
 environment:
   sdk: ">=3.1.0 <4.0.0"