gui: logo & version name updates for 21st Capital #2

Job	Run time
linter_gui	1m 56s
linter	32s
unit_tests (1.63, ubuntu-latest)	2m 10s
unit_tests (1.63, macOS-latest)	1m 58s
unit_tests (1.63, windows-latest)	3m 32s
unit_tests (nightly, ubuntu-latest)	1m 5s
unit_tests (nightly, macOS-latest)	1m 5s
unit_tests (nightly, windows-latest)	2m 13s
unit_tests_gui (1.70.0, ubuntu-latest)	3m 49s
unit_tests_gui (1.70.0, macOS-latest)	2m 26s
unit_tests_gui (1.70.0, windows-latest)	6m 1s
unit_tests_gui (nightly, ubuntu-latest)	2m 54s
unit_tests_gui (nightly, macOS-latest)	2m 38s
unit_tests_gui (nightly, windows-latest)	6m 17s
	38m 36s

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