style: format code with Gofumpt and Prettier

This commit fixes the style issues introduced in 938cc12 according to the output
from Gofumpt and Prettier.

Details: #2608

hack/actions/gen/main.go

@@ -647,7 +647,7 @@ func main() {
 				append(ngtBuildDeps,
 					append(faissBuildDeps,
 						devContainerDeps...)...)...)...),
-			Preprocess:  append(ciContainerPreprocess, ngtPreprocess, faissPreprocess,),
+			Preprocess:  append(ciContainerPreprocess, ngtPreprocess, faissPreprocess),
 			Entrypoints: []string{"/bin/bash"},
 		},
 		"vald-dev-container": {