Update dependency androidx.test.ext:junit to v1.2.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -27,7 +27,7 @@ androidx-datastore = "1.1.1"
 androidx-paging = "3.2.1"
 androidx-paging-compose = "3.2.1"
 androidx-hilt = "1.2.0"
-androidx-test-ext = "1.1.5"
+androidx-test-ext = "1.2.1"
 androidx-test-espresso = "3.5.1"
 androidx-test-uiautomator = "2.3.0"
 junit = "4.13.2"