fix(font-patcher): update `SymEnd` codepoint for devicons font #432

Job	Run time
font patcher tests (FontForge January 2023 Release, 20230101, tar.xz)	3m 44s
font patcher tests (FontForge March 2022 Release, 20220308, tar.xz)	3m 44s
font patcher tests (FontForge 20th Anniversary Edition, 20201107, tar.xz)	3m 44s
font patcher tests (FontForge 2020 March Release, 20200314, tar.xz)	3m 45s
	14m 57s

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