test: increased timeout in HtmlBuilderTest

The timeout was a bit tight for execution on github actions
and failed sometimes.

Author: slisson

modelql-client/src/jvmTest/kotlin/org/modelix/modelql/client/HtmlBuilderTest.kt

@@ -50,7 +50,7 @@ import kotlin.time.Duration.Companion.seconds
 
 class HtmlBuilderTest {
     private fun runTest(block: suspend (HttpClient) -> Unit) = testApplication {
-        withTimeout(3.seconds) {
+        withTimeout(10.seconds) {
             application {
                 val tree = CLTree(ObjectStoreCache(MapBaseStore()))
                 val branch = PBranch(tree, IdGenerator.getInstance(1))