Bump junit-jupiter-api from 5.6.0 to 5.7.1 in /app (#6)

Bumps [junit-jupiter-api](https://github.com/junit-team/junit5) from 5.6.0 to 5.7.1.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.6.0...r5.7.1)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

app/build.gradle

@@ -10,7 +10,7 @@ repositories {
 }
 
 dependencies {
-    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.6.0'
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.1'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
 }