[`pyupgrade`] Do not report when a UTF-8 comment is followed by a non-UTF-8 one (`UP009`) #36655

Job	Run time
cargo build (release)	0s
cargo fmt	21s
Determine changes	9s
mkdocs	2m 24s
python package	1m 31s
pre-commit	36s
benchmarks	5m 51s
cargo clippy	1m 54s
cargo build (msrv)	3m 42s
cargo fuzz build	0s
cargo shear	30s
cargo test (linux)	1m 42s
cargo test (linux, release)	3m 35s
cargo test (wasm)	1m 39s
cargo test (windows)	5m 34s
test scripts	1m 3s
formatter instabilities and black similarity	0s
test ruff-lsp	34s
ecosystem	2m 39s
fuzz parser	0s
	33m 44s

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