ci: Add required permissions to workflow files

Author: flovogt

.github/workflows/build.yml

@@ -4,6 +4,9 @@ on:
   pull_request:
     branches: [main]
 
+# No permissions are required for this workflow
+permissions: {}
+
 env:
   HUSKY_SKIP: true
 

.github/workflows/deploy.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches: [main]
 
+permissions:
+  contents: write
+
 env:
   HUSKY_SKIP: true