PG17 compatibility: Fix Test Failure in alter_index #6730

Job	Run time
get_postgres_versions_from_file	3s
rpm_build_tests (oraclelinux-8, 14)	2m 2s
rpm_build_tests (oraclelinux-8, 15)	2m 0s
rpm_build_tests (oraclelinux-8, 16)	1m 55s
rpm_build_tests (almalinux-8, 14)	1m 53s
rpm_build_tests (almalinux-8, 15)	1m 47s
deb_build_tests (debian-buster-all, 14)	2m 0s
rpm_build_tests (almalinux-8, 16)	1m 52s
deb_build_tests (debian-buster-all, 15)	1m 58s
rpm_build_tests (almalinux-9, 14)	1m 55s
deb_build_tests (debian-buster-all, 16)	2m 0s
rpm_build_tests (almalinux-9, 15)	1m 48s
deb_build_tests (debian-bookworm-all, 14)	2m 6s
rpm_build_tests (almalinux-9, 16)	1m 54s
deb_build_tests (debian-bookworm-all, 15)	2m 7s
deb_build_tests (debian-bookworm-all, 16)	2m 10s
deb_build_tests (debian-bullseye-all, 14)	1m 58s
deb_build_tests (debian-bullseye-all, 15)	1m 59s
deb_build_tests (debian-bullseye-all, 16)	1m 57s
deb_build_tests (ubuntu-focal-all, 14)	2m 0s
deb_build_tests (ubuntu-focal-all, 15)	1m 58s
deb_build_tests (ubuntu-focal-all, 16)	1m 55s
deb_build_tests (ubuntu-jammy-all, 14)	2m 13s
deb_build_tests (ubuntu-jammy-all, 15)	2m 14s
deb_build_tests (ubuntu-jammy-all, 16)	2m 15s
	47m 59s

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