Bump bucket4j-core from 4.10.0 to 6.0.0

Bumps [bucket4j-core](https://github.com/vladimir-bukhtoyarov/bucket4j) from 4.10.0 to 6.0.0.
- [Release notes](https://github.com/vladimir-bukhtoyarov/bucket4j/releases)
- [Commits](bucket4j/bucket4j@4.10.0...6.0.0)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -45,7 +45,7 @@
     <caffeine.version>2.8.8</caffeine.version>
     <protobuf.version>3.14.0</protobuf.version>
     <junit.version>4.13</junit.version>
-    <bucket4j.version>4.10.0</bucket4j.version>
+    <bucket4j.version>6.0.0</bucket4j.version>
     <bouncycastle.version>1.66</bouncycastle.version>
     <jodatime.version>2.10.8</jodatime.version>
     <joda-convert.version>2.2.1</joda-convert.version>