v-0.7.263-stable

What's Changed

• Docs/client cert security by @gra-moore in #132
• Issue 134: add union dataset source by @rompetroll in #135
• union datasources format as documented by @rompetroll in #138
• ignore invalid transform emissions by @rompetroll in #137
• Fix dataset-typo in namespaces section by @4hlberg in #136
• updated dockerfile to use go v 1.18.3 by @gra-moore in #139
• add dataset existence checks where missing in datasetSink by @rompetroll in #141
• prevent panics in nodeSecurity support for httpDatasetSource by @rompetroll in #142
• Feat/issue143/backup lock by @rompetroll in #145
• bump minor version prior to release by @rompetroll in #146

Full Changelog: v-0.6.240-stable...v-0.7.263-stable