ci: fix branches.

Author: purifetchi

.github/workflows/validate-schema.yml

@@ -2,9 +2,9 @@ name: Validate PinkSea Lexicons
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "master" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "master" ]
   workflow_dispatch:
 
 jobs:
@@ -14,6 +14,8 @@ jobs:
       contents: read
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout PinkSea
+        uses: actions/checkout@v4
       - name: Check for any changed lexicons
         id: check-for-changed-lexicons
         uses: tj-actions/changed-files@v41