fix: use & instead of &&
	modified:   packages/cow/cow.0.10.0/opam
	modified:   packages/cow/cow.0.8.0/opam
	modified:   packages/cow/cow.0.8.1/opam
	modified:   packages/cow/cow.0.9.0/opam
	modified:   packages/cow/cow.0.9.1/opam
	modified:   packages/cowabloga/cowabloga.0.0.1/opam
	modified:   packages/cowabloga/cowabloga.0.0.2/opam
	modified:   packages/cowabloga/cowabloga.0.0.3/opam
	modified:   packages/cowabloga/cowabloga.0.0.4/opam
	modified:   packages/cowabloga/cowabloga.0.0.5/opam
	modified:   packages/cowabloga/cowabloga.0.0.6/opam
	modified:   packages/cowabloga/cowabloga.0.0.7/opam