Bump to 1.18.1 and update changelog. (#742) #1842

Job	Run time
Detect which file has changed	5s
prepare-environment / prepare	3s
python-lint	12s
uv-lock-check	10s
markdown-lint	5s
action-lint	0s
yaml-lint	0s
validate-documentation-style	5s
validate-generated-documentation	32s
documentation	1m 16s
integration-tests-latest-infrahub	26m 53s
unit-tests (3.12)	1m 59s
unit-tests (3.11)	1m 32s
unit-tests (3.14)	2m 24s
unit-tests (3.13)	2m 39s
unit-tests (3.10)	1m 41s
	39m 36s

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