15.14.1.116

fix: lower default max_slot_wal_keep_size from 4096MB to 512MB (#2130)

* fix: lower default max_slot_wal_keep_size from 4096MB to 512MB

The 4096MB default exceeds the total disk size of free tier projects
(2GB), risking disk exhaustion from a lagging or disconnected slot.
512MB fits safely within free tier disk overhead while still providing
a reasonable buffer for logical replication slots (e.g. Realtime, CDC).
WAL archiving to S3 means local retention is not needed for recovery.

* chore: bump adminapi_release to 0.101.0

* chore: bump postgres patch versions for release

postgresorioledb-17: 17.6.0.072-orioledb -> 17.6.0.073-orioledb
postgres17: 17.6.1.115 -> 17.6.1.116
postgres15: 15.14.1.115 -> 15.14.1.116