Update changelog for 2.0.3 #171

Job	Run time
lint-unit / cookstyle	34s
lint-unit / check-metadata	0s
lint-unit / markdown-link-check	22s
lint-unit / markdownlint-cli2	3s
lint-unit / rspec	46s
lint-unit / yamllint	9s
integration (amazonlinux-2023, default)	1m 18s
integration (debian-9, default)	1m 24s
integration (debian-10, default)	1m 1s
integration (ubuntu-1804, default)	1m 15s
integration (ubuntu-2004, default)	1m 4s
integration (ubuntu-2204, default)	56s
integration (centos-7, default)	1m 0s
integration (centos-stream-8, default)	1m 1s
integration (centos-stream-9, default)	57s
	11m 50s

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