Bump biz.aQute.bnd.gradle from 6.3.1 to 6.4.0 (#79)

Bumps [biz.aQute.bnd.gradle](https://github.com/bndtools/bnd) from 6.3.1 to 6.4.0.
- [Release notes](https://github.com/bndtools/bnd/releases)
- [Changelog](https://github.com/bndtools/bnd/blob/master/docs/ADDING_RELEASE_DOCS.md)
- [Commits](bndtools/bnd@6.3.1...6.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

build.gradle

@@ -9,7 +9,7 @@ buildscript {
         }
     }
     dependencies {
-        classpath "biz.aQute.bnd:biz.aQute.bnd.gradle:6.3.1"
+        classpath "biz.aQute.bnd:biz.aQute.bnd.gradle:6.4.0"
         classpath 'com.vanniktech:gradle-maven-publish-plugin:0.19.0'
         classpath "gradle.plugin.com.hierynomus.gradle.plugins:license-gradle-plugin:0.16.1"
     }