Remove usage of jcenter() from build.gradle of the project root

[punchdrunker]

Kind (Required)

Improvement

Overview (Required)

One of the next steps of #338 and #328.
Remove usage of jcenter() from project root's build.gradle to solve the warning about jcenter().

These libs are still hosted on JCenter, so after they migrate to Maven Central, we can solve this issue.

• kotlinx-html-jvm
• kotlinx-collections-immutable-jvm

Links

• Remove usages of jcenter() #328
• https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/

UPDATE: To better support the community in this migration, JFrog has extended the JCenter new package versions submission deadline through March 31st 2021.

To clarify, the JCenter repository will keep serving packages for 12 months until February 1st 2022. Only the JCenter REST API and UI will be sunsetted on May 1st 2021.

[ykws]

I will try it ✋

kotlinx-collections-immutable-jvm 0.3.4, is published to the Maven Central repository 🎉

Kotlin/kotlinx.collections.immutable#96 (comment)

And kotlinx-html-jvm can use Jetbrains Space

Kotlin/kotlinx.html#173 (comment)

[ykws]

I tried it, but not work, it was same as the following comment.
Kotlin/kotlinx.collections.immutable#96 (comment)

On the other hand kotlinx-html-jvm is work fine!

[takahirom]

Is there anything we can do? 👀

[takahirom]

Let's wait for the transition!

[punchdrunker]

@ykws Thank you for your investigation.
I don't think removing jcenter is an urgent task, so I suggest that we wait for their migration to Maven Central for some months.

[ykws]

Is there anything we can do? 👀

@takahirom @punchdrunker
No, sorry. I agree with waiting.

[punchdrunker]

Apparently, now we can use kotlinx.collections.immutable version 0.3.4 of maven central.
https://github.com/Kotlin/kotlinx.collections.immutable
But androidx.compose.runtime is still using version 0.3.3, so we may need to wait until androidx.compose.runtime updates that dependency 😢

Regarding kotlinx.html, we can fix this issue after this PR is merged.
Kotlin/kotlinx.html#173

[takahirom]

Thanks! I removed blocked by external