chore: move dependabot and transifex to stable5.3

Signed-off-by: Christian Hartmann <chris-hartmann@gmx.de>

Author: Chartman123

.github/dependabot.yml

@@ -51,7 +51,7 @@ updates:
       - dependencies
 
   - package-ecosystem: composer
-    target-branch: 'stable5.2'
+    target-branch: 'stable5.3'
     directories:
       - '/'
       - '/vendor-bin/*/'
@@ -68,7 +68,7 @@ updates:
       - dependencies
 
   - package-ecosystem: npm
-    target-branch: 'stable5.2'
+    target-branch: 'stable5.3'
     directory: '/'
     schedule:
       interval: weekly

.tx/backport

@@ -1 +1 @@
-stable5.2
+stable5.3