upgrade to 0.31.6 (solidnerd#227)

Co-authored-by: JHenneberg <Henneberg@rohr2.de>

chore(deps): update mysql docker tag to v5.7.33 (solidnerd#225)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

upgrade to 0.31.3 (solidnerd#223)

Co-authored-by: solidnerd <niclas@mietz.io>

upgrade to 0.30.7 (solidnerd#222)

feat: upgrade bookstack to 0.30.4 (solidnerd#217)

fix: set composer version to 1.10.16 (solidnerd#215)