Bump biz.aQute.bnd.gradle from 5.3.0 to 6.1.0 (#101)

Bumps [biz.aQute.bnd.gradle](https://github.com/bndtools/bnd) from 5.3.0 to 6.1.0.
- [Release notes](https://github.com/bndtools/bnd/releases)
- [Changelog](https://github.com/bndtools/bnd/blob/master/docs/ADDING_RELEASE_DOCS.md)
- [Commits](https://github.com/bndtools/bnd/commits/6.1.0)

---
updated-dependencies:
- dependency-name: biz.aQute.bnd:biz.aQute.bnd.gradle
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

build.gradle

@@ -3,7 +3,7 @@ version '1.0-SNAPSHOT'
 buildscript {
     ext.kotlin_version = '1.6.0'
     ext.dokka_version = '1.5.31'
-    ext.bnd_version = '5.3.0'
+    ext.bnd_version = '6.1.0'
     ext.license_version = '0.15.0'
     ext.vanniktech_version = '0.18.0'
     ext.coroutines_version = '1.5.2'