build(deps): bump gson from 2.9.0 to 2.9.1 (#129)

Bumps [gson](https://github.com/google/gson) from 2.9.0 to 2.9.1.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md)
- [Commits](https://github.com/google/gson/compare/gson-parent-2.9.0...gson-parent-2.9.1)

---
updated-dependencies:
- dependency-name: com.google.code.gson:gson
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

app/build.gradle.kts

@@ -146,7 +146,7 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4")
     implementation("com.google.android.material:material:1.6.1")
     implementation("com.google.android.flexbox:flexbox:3.0.0")
-    implementation("com.google.code.gson:gson:2.9.0")
+    implementation("com.google.code.gson:gson:2.9.1")
     implementation("com.afollestad.material-dialogs:core:3.3.0")
     implementation("com.afollestad.material-dialogs:input:3.3.0")
     implementation("com.jaredrummler:colorpicker:1.1.0")