Refresh verification-metadata.xml file to fix dokka failures

[rciovati]

Description

This PR should address the build failures in #1144:

Dependency verification is an incubating feature.
> Task :buildSrc:generateExternalPluginSpecBuilders FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':buildSrc:generateExternalPluginSpecBuilders'.
> Dependency verification failed for configuration ':buildSrc:compileClasspath'
  2 artifacts failed verification:
    - dokka-gradle-plugin-0.10.1.jar (org.jetbrains.dokka:dokka-gradle-plugin:0.10.1) from repository MavenRepo
    - dokka-gradle-plugin-0.10.1.pom (org.jetbrains.dokka:dokka-gradle-plugin:0.10.1) from repository MavenRepo
  This can indicate that a dependency has been compromised. Please carefully verify the checksums.

  Open this report for more details: file:///Users/riccardociovati/ghq/github.com/pinterest/ktlint/build/reports/dependency-verification/at-1620742605343/dependency-verification-report.html

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 621ms

To refresh the metadata file, I've just deleted the old one and created a new one with the command suggested in the report:

./gradlew --write-verification-metadata pgp,sha256 help --refresh-dependencies

Checklist

• tests are added
• CHANGELOG.md is updated

[chao2zhang]

In my opinion, a better approach is to upgrade dokka version

[rciovati]

@chao2zhang I don't disagree on that. However, it looks like that upgrading Dokka requires more work than just bumping the library version so I guess that needs a separate investigation. With this PR I just want to make the build green again.

[shashachu]

@rciovati I'll take a look at the dokka update this week.

[shashachu]

Closing in favor of #1148