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

gradle/libs.versions.toml

@@ -31,7 +31,7 @@ okio = "3.9.0"
 splitties = "3.0.0"
 telephoto = "0.11.2"
 xmlutil = "0.90.1"
-junit = "1.2.0"
+junit = "1.2.1"
 uiautomator = "2.3.0"
 benchmark = "1.3.0-beta01"
 profileinstaller = "1.4.0-alpha01"