Update dependency androidx.test.ext:junit to v1.2.0 (#1524)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [androidx.test.ext:junit](https://developer.android.com/testing) |
`1.1.5` -> `1.2.0` |
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|
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|
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gradle/libs.versions.toml

@@ -135,7 +135,7 @@ androidx-window = { module = "androidx.window:window", version = "1.3.0" }
 androidx-splashscreen = "androidx.core:core-splashscreen:1.2.0-alpha01"
 
 androidx-profileinstaller = "androidx.profileinstaller:profileinstaller:1.4.0-alpha01"
-androidx-test-ext-junit = "androidx.test.ext:junit:1.1.5"
+androidx-test-ext-junit = "androidx.test.ext:junit:1.2.0"
 androidx-test-monitor = "androidx.test:monitor:1.7.0-rc01"
 androidx-test-uiautomator = "androidx.test.uiautomator:uiautomator:2.3.0"