chore: remove postgresql 13 support

Author: brianheineman

scripts/release.sh

@@ -9,7 +9,6 @@ all_versions=( \
   "16.12" "16.11" "16.10" "16.9" "16.8" "16.7" "16.6" "16.5" "16.4" "16.3" "16.2" "16.1" "16.0" \
   "15.16" "15.15" "15.14" "15.13" "15.12" "15.11" "15.10" "15.9" "15.8" "15.7" "15.6" "15.5" "15.4" "15.3" "15.2" "15.1" "15.0" \
   "14.21" "14.20" "14.19" "14.18" "14.17" "14.16" "14.15" "14.14" "14.13" "14.12" "14.11" "14.10" "14.9" "14.8" "14.7" "14.6" "14.5" "14.4" "14.3" "14.2" "14.1" "14.0" \
-  "13.24" "13.23" "13.22" "13.21" "13.20" "13.19" "13.18" "13.17" "13.16" "13.15" "13.14" "13.13" "13.12" "13.11" "13.10" "13.9" "13.8" "13.7" "13.6" "13.5" "13.4" "13.3" "13.2" "13.1" "13.0" \
 )
 release_notes="release_notes.md"