Bump core-ktx from 1.6.0 to 1.7.0

Bumps core-ktx from 1.6.0 to 1.7.0.

---
updated-dependencies:
- dependency-name: androidx.core:core-ktx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

app/build.gradle

@@ -288,7 +288,7 @@ dependencies {
         exclude group: 'org.apache.httpcomponents', module: 'httpclient'
     })
 
-    implementation 'androidx.core:core-ktx:1.6.0'
+    implementation 'androidx.core:core-ktx:1.7.0'
 
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'org.mockito:mockito-core:3.12.4'