Bump proc-macro2 from 1.0.66 to 1.0.67 #492

Job	Run time
oxi-test (ruby=2.7, os=ubuntu-latest)	1m 18s
oxi-test (ruby=3.2, os=ubuntu-latest)	1m 30s
oxi-test (ruby=ruby-head, os=ubuntu-latest)	1m 21s
oxi-test (ruby=2.7, os=windows-latest)	7m 9s
oxi-test (ruby=3.2, os=windows-latest)	7m 5s
oxi-test (ruby=ruby-head, os=windows-latest)	9m 51s
oxi-test (ruby=2.7, os=macos-latest)	4m 25s
oxi-test (ruby=3.2, os=macos-latest)	1m 38s
oxi-test (ruby=ruby-head, os=macos-latest)	1m 35s
magnus-0.5 (ruby=2.7, os=ubuntu-latest)	2m 35s
magnus-0.5 (ruby=3.2, os=ubuntu-latest)	2m 15s
magnus-0.5 (ruby=ruby-head, os=ubuntu-latest)	2m 10s
magnus-0.5 (ruby=2.7, os=windows-latest)	5m 59s
magnus-0.5 (ruby=3.2, os=windows-latest)	6m 22s
magnus-0.5 (ruby=2.7, os=macos-latest)	4m 21s
magnus-0.5 (ruby=3.2, os=macos-latest)	2m 37s
magnus-0.5 (ruby=ruby-head, os=macos-latest)	3m 17s
magnus-head (ruby=2.7, os=ubuntu-latest)	4m 8s
magnus-head (ruby=3.2, os=ubuntu-latest)	3m 11s
magnus-head (ruby=ruby-head, os=ubuntu-latest)	3m 28s
magnus-head (ruby=2.7, os=windows-latest)	5m 8s
magnus-head (ruby=3.2, os=windows-latest)	9m 37s
magnus-head (ruby=2.7, os=macos-latest)	6m 59s
magnus-head (ruby=3.2, os=macos-latest)	3m 40s
magnus-head (ruby=ruby-head, os=macos-latest)	5m 59s
	1h 47m 38s

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