ci: add paralleltestctx to lint/go (#19369)

Closes https://github.com/coder/internal/issues/884

We're adding this as a `go run` in `lint/go` for now, since adding it to
golangci-lint ourselves involves recompiling golangci-lint and then
running that new binary. I'll look into proposing it being added to the
public golangci-lint linters.

Doesn't appear to cause the lint ci job to take any longer, which is
nice.

coderd/workspaceapps/db_test.go

@@ -255,6 +255,7 @@ func Test_ResolveRequest(t *testing.T) {
 		for _, c := range cases {
 			t.Run(c.name, func(t *testing.T) {
 				t.Parallel()
+				ctx := testutil.Context(t, testutil.WaitShort)
 
 				// Try resolving a request for each app as the owner, without a
 				// token, then use the token to resolve each app.
@@ -589,6 +590,7 @@ func Test_ResolveRequest(t *testing.T) {
 
 	t.Run("TokenDoesNotMatchRequest", func(t *testing.T) {
 		t.Parallel()
+		ctx := testutil.Context(t, testutil.WaitShort)
 
 		badToken := workspaceapps.SignedToken{
 			Request: (workspaceapps.Request{