fix: add invalid_target to AuthorizationErrorCode per RFC 8707 §2 #2424

Job	Run time
checks / pre-commit	36s
checks / readme-snippets	11s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 9s
checks / test (3.12, locked, windows-latest)	3m 40s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 8s
checks / test (3.10, lowest-direct, windows-latest)	3m 5s
checks / test (3.13, locked, ubuntu-latest)	57s
checks / test (3.13, locked, windows-latest)	3m 20s
checks / test (3.13, lowest-direct, windows-latest)	2m 58s
checks / test (3.10, locked, ubuntu-latest)	1m 6s
checks / test (3.11, locked, ubuntu-latest)	1m 2s
checks / test (3.10, locked, windows-latest)	2m 36s
checks / test (3.14, locked, windows-latest)	3m 32s
checks / test (3.11, lowest-direct, windows-latest)	2m 54s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.14, lowest-direct, windows-latest)	2m 28s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 30s
checks / test (3.12, lowest-direct, windows-latest)	4m 0s
checks / test (3.12, locked, ubuntu-latest)	1m 6s
checks / test (3.11, locked, windows-latest)	2m 40s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 4s
checks / test (3.14, locked, ubuntu-latest)	2m 31s
all-green	4s
	44m 44s

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