chore(master): release 1.2.1

[github-actions[bot]]

:robot: I have created a release beep boop

1.2.1 (2022-06-07)

Bug Fixes

• Object(...) is not a function error (da97b6f)

Miscellaneous Changes

• set required grafana version to >= 7.5.0 (8830627)

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[github-actions[bot]]

:robot: Release is at https://github.com/camptocamp/grafana-prometheus-alertmanager-datasource/releases/tag/v1.2.1 :sunflower: