chore(deps): update plugin nmcp to v1.6.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
com.gradleup.nmcp.aggregation	1.6.0 → 1.6.1

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Release Notes

gradleup/nmcp (com.gradleup.nmcp.aggregation)

v1.6.1

2026-07-01

Restores some checksums:

• maven-metadata.md5, maven-metadata.sha1 (because maven outputs a scary warning without them)
• All the .sha512 checksums (because Gradle uses them to validate caches contents)

All in all, nmcp now publishes .md5, .sha1, .sha512 for all files except for signature files (.asc) where no checksums are required.

Long term, I'd love to drop the .md5 and .sha1 checksums. That would require both maven and Sonatype to stop requesting them.

Many thanks to @​marcphilipp and @​leonard84 for helping me navigate this issue 💙

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