Upgrade ktor to 3.1.3 to avoid conflict version when use in KMP project

[hieuwu]

Summary

Upgrade ktor to 3.1.3 resolve #7061
When use firebase-ai in project that uses ktor:

implementation("io.ktor:ktor-client-plugins:3.1.1")
implementation("io.ktor:ktor-client-core:3.1.3")
implementation("io.ktor:ktor-client-okhttp:3.1.3")
implementation("io.ktor:ktor-client-content-negotiation:3.1.3")
implementation("io.ktor:ktor-serialization-kotlinx-json:3.1.3")

Adding firebase-ai causes conflict of ktor classes

implementation(platform("com.google.firebase:firebase-bom:33.15.0"))
implementation("com.google.firebase:firebase-ai") 

When run through code that sets up firebase-ai:

val model = Firebase.ai(backend = GenerativeBackend.googleAI())
  .generativeModel("gemini-2.5-flash")

It throws:

 Process: com.crafted.kudossnap.android, PID: 22877
 java.lang.NoClassDefFoundError: Failed resolution of: Lio/ktor/client/plugins/HttpTimeout;
 	at com.google.firebase.ai.common.APIController$client$1.invoke(APIController.kt:127)
 	at com.google.firebase.ai.common.APIController$client$1.invoke(APIController.kt:126)

Solution

Because firebase-ai is using oudated ktor, it causes class conflict when add the library. So ktor needs to be upgraded to avoid

[gemini-code-assist]

Summary of Changes

Hello @hieuwu, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request is a targeted dependency upgrade aimed at resolving a critical class conflict. By bumping the Ktor library version, it ensures seamless integration and prevents runtime errors when the firebase-ai module is used alongside other Ktor dependencies in a consuming application, thereby enhancing the overall stability and compatibility of the SDK.

Highlights

• Dependency Upgrade: I've upgraded the Ktor library version from 2.3.2 to 3.1.3 in the project's dependency management file.
• Compatibility Fix: This upgrade specifically addresses a NoClassDefFoundError (related to HttpTimeout) that occurs when firebase-ai is used in projects that also depend on Ktor, resolving a version conflict issue.

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[gemini-code-assist]

Code Review

This pull request upgrades Ktor from version 2.3.2 to 3.1.3 to resolve a dependency conflict when using firebase-ai with newer versions of Ktor in a user's project. While the version bump is necessary, upgrading a major version of a library like Ktor can introduce breaking changes. I've added a comment to inquire about whether the necessary code adaptations and regression testing have been performed to ensure this upgrade is safe for the SDK.

[gemini-code-assist]

Upgrading Ktor from version 2.x to 3.x is a major version change that can introduce breaking API changes. For example, the HttpTimeout plugin, which seems related to the issue you're fixing, has been significantly reworked in Ktor 3.

Could you please confirm that you've:

• Analyzed the Ktor 3.0 migration guide for any necessary code changes in modules that use Ktor (like firebase-ai)?
• Run all relevant tests to ensure that this version bump doesn't introduce any regressions?

This is important to ensure the stability of the SDK.

[hieuwu]

I updated in 80d02de .