Update dependency versions

[rehanone]

Updates to dependencies for this docker image:

• Bumped minimum postfix version from 3.5 to 3.6.
• Bumped minimum python version from 3.8 to 3.10.
• Bumped minimum certbot version from 1.20.0 to 1.29.0.
• Updated jinja version from 2.11.3 to 3.1.2.

[rehanone]

@nguyenkims Can you please review these changes and release the update image? I have tested this image locally with docker compose.