Remove all Cargo.(lock|toml) files from spec.extensions (#245) #464

Job	Run time
oxi-test (ruby=2.7, os=ubuntu-latest)	1m 41s
oxi-test (ruby=3.2, os=ubuntu-latest)	1m 1s
oxi-test (ruby=ruby-head, os=ubuntu-latest)	56s
oxi-test (ruby=2.7, os=windows-latest)	5m 28s
oxi-test (ruby=3.2, os=windows-latest)	8m 49s
oxi-test (ruby=ruby-head, os=windows-latest)	5m 16s
oxi-test (ruby=2.7, os=macos-latest)	2m 0s
oxi-test (ruby=3.2, os=macos-latest)	1s
oxi-test (ruby=ruby-head, os=macos-latest)	1s
magnus-0.5 (ruby=2.7, os=ubuntu-latest)	2m 44s
magnus-0.5 (ruby=3.2, os=ubuntu-latest)	2m 15s
magnus-0.5 (ruby=ruby-head, os=ubuntu-latest)	3m 0s
magnus-0.5 (ruby=2.7, os=windows-latest)	9m 29s
magnus-0.5 (ruby=3.2, os=windows-latest)	10m 2s
magnus-0.5 (ruby=2.7, os=macos-latest)	3m 49s
magnus-0.5 (ruby=3.2, os=macos-latest)	3m 17s
magnus-0.5 (ruby=ruby-head, os=macos-latest)	4m 4s
magnus-head (ruby=2.7, os=ubuntu-latest)	4m 19s
magnus-head (ruby=3.2, os=ubuntu-latest)	3m 37s
magnus-head (ruby=ruby-head, os=ubuntu-latest)	3m 35s
magnus-head (ruby=2.7, os=windows-latest)	9m 25s
magnus-head (ruby=3.2, os=windows-latest)	10m 57s
magnus-head (ruby=2.7, os=macos-latest)	2m 1s
magnus-head (ruby=3.2, os=macos-latest)	2m 27s
magnus-head (ruby=ruby-head, os=macos-latest)	2m 7s
	1h 42m 21s

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