[INTERNAL] Disable automatic dependabot updates for v2 branch

Author: flovogt

.github/dependabot.yml

@@ -1,6 +1,5 @@
 version: 2
 updates:
-# Default Branch
 - package-ecosystem: "github-actions"
   directory: "/"
   schedule:
@@ -16,21 +15,3 @@ updates:
   - RandomByte
   - matz3
   versioning-strategy: increase
-# v2 Branch
-- package-ecosystem: "github-actions"
-  directory: "/"
-  schedule:
-    interval: "weekly"
-  target-branch: "v2"
-- package-ecosystem: npm
-  directory: "/"
-  schedule:
-    interval: weekly
-    day: sunday
-    time: "10:00"
-    timezone: Etc/UCT
-  target-branch: "v2"
-  reviewers:
-  - RandomByte
-  - matz3
-  versioning-strategy: increase