Fix deprecated RequestTrace usage in DefaultMavenVersionResolver

[Safkatul-Islam]

This change replaces direct RequestTrace constructor usage with the supported static factory method, addressing the deprecation noted in #1515.

Fixes #1515

[mhalbritter]

Thanks for the PR. Please sign-off your commit as documented here.

[Safkatul-Islam]

Thanks for the reminder!
I’ve signed off the commit and pushed the update. Please let me know if anything else is needed.

[mhalbritter]

Hello!

You changed this line:

RequestTrace requestTrace = new RequestTrace(null);

But there's no deprecation on the constructor?

Those are the deprecation warnings:

[WARNING] .../src/main/java/io/spring/initializr/versionresolver/DefaultMavenVersionResolver.java:[98,17] org.eclipse.aether.spi.locator.ServiceLocator in org.eclipse.aether.spi.locator has been deprecated
[WARNING] .../src/main/java/io/spring/initializr/versionresolver/DefaultMavenVersionResolver.java:[188,24] org.eclipse.aether.spi.locator.ServiceLocator in org.eclipse.aether.spi.locator has been deprecated
[WARNING] .../src/main/java/io/spring/initializr/versionresolver/DefaultMavenVersionResolver.java:[189,17] org.eclipse.aether.impl.DefaultServiceLocator in org.eclipse.aether.impl has been deprecated
[WARNING] .../src/main/java/io/spring/initializr/versionresolver/DefaultMavenVersionResolver.java:[189,75] newServiceLocator() in org.apache.maven.repository.internal.MavenRepositorySystemUtils has been deprecated