Bump kotlinVer from 1.6.10 to 1.7.20

Bumps `kotlinVer` from 1.6.10 to 1.7.20.

Updates `kotlin-test-junit` from 1.6.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.6.10...v1.7.20)

Updates `kotlin-gradle-plugin` from 1.7.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.7.10...v1.7.20)

Updates `kotlin-serialization` from 1.7.10 to 1.7.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.7.20/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/compare/v1.7.10...v1.7.20)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-serialization
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -131,7 +131,7 @@ ext.applyCrashlyticsIfRelease = { project ->
 ext.kotlinTest = { dependencies ->
     dependencies.testImplementation Dependencies.mavenCentral.kluent
     dependencies.testImplementation Dependencies.mavenCentral.kotlinTest
-    dependencies.testImplementation "org.jetbrains.kotlin:kotlin-test-junit:1.6.10"
+    dependencies.testImplementation "org.jetbrains.kotlin:kotlin-test-junit:1.7.20"
     dependencies.testImplementation 'io.mockk:mockk:1.13.2'
     dependencies.testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 

dependencies.gradle

@@ -97,7 +97,7 @@ ext.Dependencies.with {
         }
     }
 
-    def kotlinVer = "1.7.10"
+    def kotlinVer = "1.7.20"
     def sqldelightVer = "1.5.4"
     def composeVer = "1.2.1"
     def ktorVer = "2.1.2"