Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 229b06f4918f7466d1bfae2343f112b0d698dbc5.
Revert "[maven-release-plugin] prepare release mockserver-3.2"

This reverts commit c395dd2299064d9ef322a43a2567bb414df080a8.
[maven-release-plugin] prepare release mockserver-3.2