Rename parse_float into parse_number #649

Job	Run time
Ruby memcheck	47s
ruby-versions / Generate Ruby versions	1s
ubuntu-22.04 2.7	54s
ubuntu-22.04 3.0	47s
ubuntu-22.04 3.1	32s
ubuntu-22.04 3.2	30s
ubuntu-22.04 3.3	30s
ubuntu-22.04 head	1m 18s
ubuntu-22.04 jruby	1m 13s
ubuntu-22.04 jruby-head	1m 7s
macos-13 2.7	1m 40s
macos-13 3.0	49s
macos-13 3.1	55s
macos-13 3.2	53s
macos-13 3.3	45s
macos-13 head	34s
macos-13 jruby	1m 29s
macos-13 jruby-head	1m 17s
macos-14 2.7	50s
macos-14 3.0	22s
macos-14 3.1	29s
macos-14 3.2	27s
macos-14 3.3	30s
macos-14 head	16s
macos-14 jruby	39s
macos-14 jruby-head	51s
windows-latest 2.7	3m 15s
windows-latest 3.0	2m 37s
windows-latest 3.1	2m 37s
windows-latest 3.2	2m 31s
windows-latest 3.3	3m 22s
windows-latest head	1m 42s
windows-latest mswin	1m 36s
ubuntu-latest jruby-9.4	1m 4s
macos-latest truffleruby-head	36s
ubuntu-latest truffleruby-head	2m 2s
	41m 47s

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