CI: Copr-release - change default container from ol8 to ol9 #259

Job	Run time
check / editor-config	7s
check / include-orders	3s
check / doxygen	1m 10s
check / clang-checks	2m 6s
check / cppcheck / cppcheck-test	9s
build-os-matrix	3s
build (oraclelinux:9) / build	1m 31s
build (rockylinux:9) / build	1m 15s
build (oraclelinux:10) / build	1m 19s
build (fedora:38) / build	1m 47s
rpm-test (oraclelinux:9) / test	32s
rpm-test (fedora:38) / test	48s
make-test (rockylinux:9) / make-test	1m 45s
rpm-test (rockylinux:9) / test	16s
make-test (oraclelinux:9) / make-test	1m 59s
make-test (oraclelinux:10) / make-test	1m 35s
make-test (fedora:38) / make-test	2m 4s
rpm-test (oraclelinux:10) / test	15s
	18m 44s

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