Fix invalid NEON instructions for armv6 Raspberry Pi's #112

Job	Run time
(MacOS x86_64) Build curl-impersonate and run the tests	7m 24s
(MacOS x86_64) Build curl-impersonate and run the tests	6m 54s
(Linux x86_64) Build curl-impersonate and run the tests	10m 23s
(Linux x86_64) Build curl-impersonate and run the tests	9m 21s
(MacOS arm64) Build curl-impersonate and run the tests	4m 52s
(MacOS arm64) Build curl-impersonate and run the tests	4m 24s
(Linux i386) Build curl-impersonate and run the tests	3m 46s
(Linux i386) Build curl-impersonate and run the tests	4m 3s
(Linux aarch64) Build curl-impersonate and run the tests	3m 49s
(Linux aarch64) Build curl-impersonate and run the tests	3m 47s
(Linux arm) Build curl-impersonate and run the tests	3m 38s
(Linux arm) Build curl-impersonate and run the tests	8m 9s
	1h 10m 30s

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