0.0.17

• update minor versions of PostgreSQL to the latest currently available: 9.6.24 (EOL), 10.21, 11.16, 12.11, 13.7, 14.4
• update all extensions (exact versions can be found here: https://gitlab.com/postgres-ai/custom-images#the-complete-list-of-available-extensions)
• update wal-g to v2.0.0 and pgbackrest to v2.39