Meson

vendor: bump version to 2.3.1 #3123

Job	Run time
nix-build-develop-clang (none, release, true)	2m 51s
nix-build-develop-gcc (none, release, true)	3m 5s
nix-build-develop-clang (none, release, false)	2m 55s
nix-build-develop-gcc (none, release, false)	3m 0s
nix-build-develop-clang (none, debug, true)	2m 40s
nix-build-develop-gcc (none, debug, true)	2m 54s
nix-build-develop-clang (none, debug, false)	2m 52s
nix-build-develop-gcc (none, debug, false)	2m 59s
nix-build-develop-gcc (address, release, true)	4m 46s
nix-build-develop-gcc (address, release, false)	4m 33s
nix-build-develop-gcc (address, debug, true)	3m 55s
nix-build-develop-gcc (address, debug, false)	3m 55s
nix-build-develop-gcc (undefined, release, true)	4m 7s
nix-build-develop-gcc (undefined, release, false)	4m 13s
nix-build-develop-gcc (undefined, debug, true)	3m 13s
nix-build-develop-gcc (undefined, debug, false)	3m 20s
	55m 18s

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