Allow triggering workflows manually

.github/workflows/android.yml

@@ -1,5 +1,6 @@
 name: Android CI
 on:
+  workflow_dispatch:
   push:
     branches:
       - main

.github/workflows/changelog-to-fastlane.yml

@@ -1,5 +1,6 @@
 name: Convert CHANGELOG to Fastlane
 on:
+  workflow_dispatch:
   push:
     branches:
       - main

.github/workflows/contributors-to-file.yml

@@ -1,5 +1,6 @@
 name: Write contributors to file
 on:
+  workflow_dispatch:
   schedule:
     - cron: '3 4 * * 0'
 

.github/workflows/generate-feature-graphic.yml

@@ -1,5 +1,6 @@
 name: Generate feature graphic
 on:
+  workflow_dispatch:
   push:
     branches:
       - main

.github/workflows/update-locales.yml

@@ -1,5 +1,6 @@
 name: Update locales
 on:
+  workflow_dispatch:
   push:
     branches:
       - main