build(deps): bump mamba-org/setup-micromamba from 1 to 2 #315

Job	Run time
--enable-debug --enable-compile-warnings --without-intrinsics	4m 4s
--enable-debug --enable-compile-warnings	5m 19s
--enable-compile-warnings --without-intrinsics	4m 8s
--enable-compile-warnings	4m 3s
--enable-debug --without-intrinsics	4m 8s
--with-external-bliss --with-external-planarity	7m 4s
--enable-debug	3m 59s
--with-external-planarity	7m 27s
--without-intrinsics	3m 53s
--with-external-bliss	7m 7s
	51m 12s

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