Increase stdlib-js mocha test timeouts to 10s

Some tests often do not fit into the default timeout when running tests
in parallel on CI.

libraries/stdlib/js-ir/build.gradle.kts

@@ -7,7 +7,13 @@ plugins {
 
 kotlin {
     js(IR) {
-        nodejs()
+        nodejs {
+            testTask {
+                useMocha {
+                    timeout = "10s"
+                }
+            }
+        }
     }
 }
 

libraries/stdlib/js-v1/build.gradle

@@ -348,6 +348,7 @@ task runMocha(type: NodeTask, dependsOn: [testClasses, installMocha, ':kotlin-te
         args = ['--reporter', 'min']
     }
 
+    args += ['--timeout', '10s']
     args += [jsTestOutputFile, kotlinTestJsTestOutputFile]
 
     execOverrides {