Update submodules and drop no-op test skip

Sync admin, drivers and homepage to their latest commits (lint and
vet steps added to CI, homepage lint errors fixed). Remove the
-skip=TestMain flag from the Go workflow: TestMain is not a test
function, so the flag never matched anything.

Author: abbychau

.github/workflows/go.yml

@@ -28,10 +28,10 @@ jobs:
       run: go vet ./...
 
     - name: Test
-      run: go test -v -skip=TestMain ./...
+      run: go test -v ./...
 
     - name: Race detector
-      run: go test -race -skip=TestMain ./...
+      run: go test -race ./...
 
     - name: Golangci-lint
       uses: golangci/golangci-lint-action@v7