chore: update dependency prettier-plugin-packagejson to v2.5.6 #226

Job	Run time
test (ubuntu-latest)	8s
test (macos-latest)	9s
test-with-version-file (.tool-versions (fluttergen 5.6.0), .tool-versions, echo "fluttergen 5.6.0...	4s
test-with-version-file (.tool-versions (fluttergen5.6.0), .tool-versions, echo "fluttergen5.6.0" ...	5s
test-with-version-file (.tool-versions (fluttergen 5.6.0), .tool-versions, echo "fluttergen 5.6...	5s
test-with-version-file (.mise.toml (fluttergen = '5.6.0'), .mise.toml, echo "[tools]\nfluttergen ...	5s
test-with-version-file (.mise.toml (fluttergen='5.6.0'), .mise.toml, echo "[tools]\nfluttergen='5...	8s
test-with-version-file (.mise.toml (fluttergen = '5.6.0'), .mise.toml, echo "[tools]\nflutterge...	5s
test-with-version-file (.mise.toml (fluttergen = "5.6.0"), .mise.toml, echo "[tools]\nfluttergen ...	5s
	54s

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