Add smtp port for mastodon, add valkey restore to restore_mastodon, and update textual + rich

[jessebot]

• add smtp port for mastodon to secret_keys. example:

  apps:
    mastodon:
      argo:
        # secrets keys to make available to Argo CD ApplicationSets
        secret_keys:
          # smtp port on your mail server
          smtp_port: '25'

• clean up restore_mastodon function to include valkey replica and primary pvc restores, and update config to allow setting their snapshot IDs during restores:

  apps:
    mastodon:
      init:
        restore:
          restic_snapshot_ids:
            mastodon_valkey_primary: latest
            mastodon_valkey_replica: latest

• closes Update dependency textual to ^0.84.0 #326
• closes Update dependency rich to v13.9.3 #315