引数の`VoicevoxUserDictWord*`がunalignedであることを許す #1993

Job	Run time
actionlint	18s
rust-integration-test-strategy-matrix	3s
rust-lint	2m 58s
rust-unit-test	8m 31s
shellcheck	17s
validate-cargo-lock	51s
build-and-test-java-api (windows-latest)	11m 58s
build-and-test-java-api (macos-latest)	5m 46s
build-and-test-java-api (ubuntu-latest)	4m 11s
build-and-test-python-api (windows-latest)	14m 7s
build-and-test-python-api (macos-latest)	7m 9s
build-and-test-python-api (ubuntu-latest)	4m 34s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	3m 34s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	2m 32s
build-windows-cpp-example	9m 30s
c-header	1m 38s
rust-integration-test (windows-2019, directml)	4m 3s
rust-integration-test (macos-11)	9m 47s
rust-integration-test (ubuntu-20.04)	1m 32s
	1h 33m 19s

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