Update all chart dependencies to use latest databases (#273)

charts/commento/Chart.lock

charts/commento/Chart.yaml

charts/commento/README.md

charts/commento/charts/postgres-0.2.8.tgz

charts/commento/charts/postgres-0.2.9.tgz

charts/ghost/Chart.lock

charts/ghost/Chart.yaml

charts/ghost/README.md

charts/ghost/charts/mariadb-0.2.10.tgz

charts/ghost/charts/mariadb-0.2.9.tgz

charts/gitea/Chart.lock

charts/gitea/Chart.yaml

charts/gitea/README.md

charts/gitea/charts/mariadb-0.2.10.tgz

charts/gitea/charts/mariadb-0.2.9.tgz

charts/gitea/charts/postgres-0.2.8.tgz

charts/gitea/charts/postgres-0.2.9.tgz

charts/graylog/Chart.lock

charts/graylog/Chart.yaml

charts/graylog/README.md