Update changelog for 4.0.15 #151

Job	Run time
lint-unit / check-metadata	0s
lint-unit / markdownlint-cli2	10s
lint-unit / markdown-link-check	20s
lint-unit / cookstyle	38s
lint-unit / rspec	47s
lint-unit / yamllint	8s
integration (almalinux-8, package)	2m 33s
integration (almalinux-8, source)	3m 39s
integration (almalinux-8, check)	1m 54s
integration (centos-7, package)	2m 19s
integration (centos-7, source)	3m 27s
integration (centos-7, check)	2m 7s
integration (centos-stream-8, package)	3m 46s
integration (centos-stream-8, source)	4m 19s
integration (centos-stream-8, check)	3m 9s
integration (debian-10, package)	2m 10s
integration (debian-10, source)	3m 51s
integration (debian-10, check)	1m 55s
integration (debian-11, package)	2m 13s
integration (debian-11, source)	3m 9s
integration (debian-11, check)	1m 40s
integration (ubuntu-1804, package)	2m 13s
integration (ubuntu-1804, source)	4m 1s
integration (ubuntu-1804, check)	2m 6s
integration (ubuntu-2004, package)	2m 25s
integration (ubuntu-2004, source)	4m 3s
integration (ubuntu-2004, check)	2m 22s
integration (opensuse-leap-15, package)	2m 16s
integration (opensuse-leap-15, source)	4m 17s
integration (opensuse-leap-15, check)	2m 17s
integration (rockylinux-8, package)	2m 27s
integration (rockylinux-8, source)	3m 33s
integration (rockylinux-8, check)	1m 50s
	1h 18m 4s

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