chore(release): update v2.6.3 notes and module refs #605

Job	Run time
Runtime Smoke and CLI Checks	9m 32s
Build (gcc, examples=OFF)	6m 8s
Build (clang, examples=OFF)	8m 33s
Umbrella Valgrind	8m 5s
Sanitizers (clang)	11m 41s
Build (clang, examples=ON)	9m 16s
Umbrella Static Analysis	1h 41m 46s
Umbrella Configuration Coverage	12m 51s
Umbrella Package Export Check	10m 3s
Build (gcc, examples=ON)	9m 10s
SECURITY_CI Summary	2s
	3h 7m 7s

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