Bump io.ktor:ktor-client-ios from 1.6.8 to 2.3.12

Bumps [io.ktor:ktor-client-ios](https://github.com/ktorio/ktor) from 1.6.8 to 2.3.12.
- [Release notes](https://github.com/ktorio/ktor/releases)
- [Changelog](https://github.com/ktorio/ktor/blob/main/CHANGELOG.md)
- [Commits](https://github.com/ktorio/ktor/commits)

---
updated-dependencies:
- dependency-name: io.ktor:ktor-client-ios
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

shared/build.gradle.kts

@@ -47,7 +47,7 @@ kotlin {
     }
     val iosMain by getting {
       dependencies {
-        implementation("io.ktor:ktor-client-ios:1.6.8")
+        implementation("io.ktor:ktor-client-ios:2.3.12")
       }
     }
     val iosTest by getting