Bump setup-go to v6.3.0 in workflows

Author: pardeike

.github/workflows/release-go-schemas.yml

@@ -33,7 +33,7 @@ jobs:
         fetch-depth: 0
 
     - name: Setup Go
-      uses: actions/setup-go@v6.0.0
+      uses: actions/setup-go@v6.3.0
       with:
         go-version-file: packages/go/schemas/go.mod
 

.github/workflows/validate.yml

@@ -231,7 +231,7 @@ jobs:
       uses: actions/checkout@v6.0.2
 
     - name: Setup Go
-      uses: actions/setup-go@v6.0.0
+      uses: actions/setup-go@v6.3.0
       with:
         go-version-file: packages/go/schemas/go.mod