Bump version to 54.0.0 #584

Job	Run time
build / lint-toml	5s
build / lint-python	14s
build / generate-license	55s
build / lint-rust	14s
build / check-crates-patch	-6s
build / Linux arm64 (abi3)	9m 55s
build / Linux x86_64 (abi3)	15m 39s
build / macOS arm64 (3.14t)	7m 33s
build / Linux arm64 (3.14t)	9m 48s
build / Windows x86_64 (abi3)	12m 6s
build / macOS arm64 (abi3)	7m 15s
build / Windows x86_64 (3.14t)	8m 43s
build / Linux x86_64 (3.14t)	10m 55s
build / macOS x86_64 (${{ matrix.python-tag }})	0s
build / Source distribution	0s
build / Build docs	1m 22s
build / Merge build artifacts	-1s
test / test-matrix (3.10, abi3, false)	3m 52s
test / test-matrix (3.14, abi3, false)	4m 28s
test / test-matrix (3.14t, 3.14t, true)	2m 57s
test / test-matrix (3.11, abi3, false)	4m 8s
test / test-matrix (3.12, abi3, false)	4m 20s
test / test-matrix (3.13, abi3, false)	3m 53s
	1h 48m 15s

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