Update runner version to 1.6.0-alpha04 to prep for release.

PiperOrigin-RevId: 558262636

Author: brettchabot

build_extensions/axt_versions.bzl

@@ -2,7 +2,7 @@
 
 # AXT versions
 # LINT.IfChange
-RUNNER_VERSION = "1.6.0-alpha03"  # stable 1.5.1
+RUNNER_VERSION = "1.6.0-alpha04"  # stable 1.5.1
 RULES_VERSION = "1.6.0-alpha01"  # stable 1.5.0
 MONITOR_VERSION = "1.7.0-alpha01"  # stable 1.6.0
 ESPRESSO_VERSION = "3.6.0-alpha01"  # stable 3.5.0

gradle-tests/settings.gradle

@@ -15,7 +15,7 @@ dependencyResolutionManagement {
     }
     versionCatalogs {
         libs {
-            library('runner', 'androidx.test:runner:1.6.0-alpha03')
+            library('runner', 'androidx.test:runner:1.6.0-alpha04')
             library('ext.junit', 'androidx.test.ext:junit:1.2.0-alpha01')
             library('ext.truth', 'androidx.test.ext:truth:1.6.0-alpha01')
             library('espresso.core', 'androidx.test.espresso:espresso-core:3.6.0-alpha01')