pig-v0.7.3

Changelog

• faf6311 add nginx / timescaledb debian 13 repo
• e379f76 add python3-etcd to patroni alias in debian/ubuntu systems
• 3a70b87 bump pigsty version to 3.7.0
• d3afdfc feat: add pig repo reload command
• 8475530 fix pgdg sysupdate aarch64 repo
• c0c2306 fix: Handle EL10 aarch64 pgdg repo $releasever substitution
• 1b630ce rollback rhel-10.0-aarch64 repo adhoc logic
• 5dfabb1 routine extension update
• c687521 v0.7.3 release