extended-postgres CVE refresh: Go binaries rebuilt with patched deps + apt upgrade

Bundles two CVE-fix MRs landed since 0.6.2:
  9db1085 fix(extended-postgres): rebuild Go binaries with patched deps
  ecced70 chore(extended-postgres): apt upgrade to clear OS CVEs from base

Driven by dle-packaged Tier-2 findings on v4.1.1-p10 (76 CRITICAL CVEs in
container scan, ~50 of them in postgresai/extended-postgres:11..18).