Merge pull request mautic#15581 from escopecz/bump-7.0.0-beta

Bumping to version 7.0.0-beta

Merge pull request mautic#15524 from patrykgruszka/release-606

Bump version to 6.0.6

Merge pull request mautic#15450 from kuzmany/increment-release-605

Increment version to 6.0.5

Merge pull request mautic#15449 from kuzmany/increment-release-528

Increment version to 5.2.8

Bump to 6.0.4 (mautic#15347)

Merge pull request mautic#15334 from escopecz/bump-to-7-alpha

Bump to M7-alpha

Merge pull request mautic#15151 from kuzmany/bump-6.0.3

Bump version to 6.0.3

Increment version to 5.2.7

Bump version in preparation for release (mautic#15050)