build: resolve compile error with gcc-13
GsKit/base/utils/Unicode.h:16:9: error: 'uint32_t' does not name a type
GsKit/base/utils/Unicode.h:17:27: error: 'UnicodeChar' was not declared in this scope
GsKit/base/utils/Unicode.h:17:38: error: template argument 1 is invalid
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