Update spec/std/socket/udp_socket_spec.cr #3494

Job	Run time
x86_64-gnu-test (1.7.3)	37m 2s
x86_64-gnu-test (1.8.2)	35m 23s
x86_64-gnu-test (1.9.2)	35m 58s
x86_64-gnu-test (1.10.1)	34m 6s
x86_64-gnu-test (1.11.2)	34m 27s
x86_64-gnu-test (1.12.2)	34m 16s
x86_64-gnu-test (1.13.3)	34m 13s
x86_64-gnu-test (1.14.0)	34m 25s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	32m 44s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	35m 1s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	33m 19s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	36m 12s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	35m 21s
x86_64-musl-test	38m 27s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	34m 53s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	33m 43s
check_format	1m 38s
x86_64-gnu-test-preview_mt	5m 27s
	9h 26m 35s

Provide feedback