Bump to 1.6.3 for @cole-miller #304

Job	Run time
run_tests_linux	6m 40s
clippy_mac	1m 32s
clippy_linux	1m 19s
create_draft_release	21s
run_tests_windows	8m 25s
clippy_windows	2m 13s
run_tests_mac	9m 19s
check_scripts	14s
compliance_check	1m 20s
bundle_linux_x86_64	21m 24s
bundle_linux_aarch64	20m 23s
bundle_windows_x86_64	30m 16s
bundle_windows_aarch64	34m 43s
bundle_mac_x86_64	23m 29s
bundle_mac_aarch64	22m 46s
upload_release_assets	23s
release_compliance_check	1m 4s
validate_release_assets	3s
auto_release_preview	9s
push_release_update_notification	3s
	3h 6m 6s

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