Update dependency org.kohsuke:github-api to v2.0-rc.6 (#1683)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -63,7 +63,7 @@
     <commons-codec.version>1.21.0</commons-codec.version>
     <jacoco-maven-plugin.version>0.8.14</jacoco-maven-plugin.version>
     <jgit.version>7.6.0.202603022253-r</jgit.version>
-    <github-api.version>2.0-rc.5</github-api.version>
+    <github-api.version>2.0-rc.6</github-api.version>
     <commons-compress.version>1.28.0</commons-compress.version>
     <guava.version>33.5.0-jre</guava.version>
     <byte-buddy.version>1.18.5</byte-buddy.version>