Merge branch 'adminer-5.4.2'

Update to Adminer 5.4.2

Bump actions/checkout from 5 to 6 (#229)

Update to 5.4.1 (#224)

Update to Adminer 5.4.0 (#221)

Bump actions/checkout from 4 to 5 (#220)

Update to Adminer 5.3.0 (#215)

Merge branch 'plugin-loader'

Fix plugin-loader.php for Adminer 5.2.x

Merge branch 'adminer-5.2.1'

Update to Adminer 5.2.1

Merge branch 'adminer-5.1.0'

Update to Adminer 5.1.0

Merge branch 'adminer-5.0.6'

Update to Adminer 5.0.6