v1.2.1-dev.1

What's Changed

• feat(config): configuration of deadlock detection by @lklimek in #880
• fix(consensus): vote extensions verified multiple times by @lklimek in #867
• chore(release): update changelog and bump version to 1.2.0 by @lklimek in #881
• fix(node): genesis.json not loaded on restart before genesis block is mined by @lklimek in #892
• fix(config): panic when loading invalid node key file by @lklimek in #888
• build: bump git-cliff to 2.4 and remove history before 1.0 by @lklimek in #882
• chore(release): update changelog and bump version to 1.2.1-dev.1 by @lklimek in #893

Full Changelog: v1.2.0-dev.3...v1.2.1-dev.1