[maven-release-plugin] prepare release credentials-1.7.6
[maven-release-plugin] prepare release credentials-1.7.6

stephenc/credentials-plugin,roccivic/credentials-plugin,jenkinsci/credentials-plugin,stephenc/credentials-plugin,roccivic/credentials-plugin,roccivic/credentials-plugin,jacob-keller/credentials-plugin,jacob-keller/credentials-plugin,MarkEWaite/credentials-plugin,jenkinsci/credentials-plugin,roccivic/credentials-plugin,stephenc/credentials-plugin,jacob-keller/credentials-plugin,jenkinsci/credentials-plugin,stephenc/credentials-plugin,MarkEWaite/credentials-plugin,jacob-keller/credentials-plugin,MarkEWaite/credentials-plugin