chore(deps): update actions/setup-go action to v6

Author: renovate-bot

.github/workflows/generate_jsonschema/action.yaml

@@ -21,7 +21,7 @@ runs:
       uses: actions/setup-node@v4
 
     - name: Setup Go for proto2jsonschema script
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: "1.14"
 

.github/workflows/test_clients.yaml

@@ -103,7 +103,7 @@ jobs:
         path: ${{ env.DATA_SOURCE_CHECKOUT_PATH }}
 
     - name: Setup Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: '^1.23.9'