Remove `winnow` from `gix-actor` public API #7972

Job	Run time
test-doc	1m 31s
Check MSRV badge	11s
cargo check MSRV (ubuntu-latest)	1m 28s
test-journey	3m 17s
test-fixtures-windows (windows-11-arm)	17m 44s
test-fixtures-windows (windows-latest)	13m 7s
test	8m 8s
cargo check MSRV (windows-2025)	3m 2s
test-32bit (arm32v7)	4m 33s
pure-rust-build	2m 19s
check-blocking	6s
check-no-persist-credentials	28s
test-32bit-windows-size-doc	8m 24s
WebAssembly (wasm32-unknown-unknown)	48s
lint	4m 46s
WebAssembly (wasm32-wasip2)	58s
test-fast (ubuntu-24.04-arm)	2m 55s
test-fast (macos-latest)	3m 24s
test-fast (windows-11-arm)	12m 7s
cargo-deny	28s
WebAssembly (wasm32-wasip1)	1m 4s
test-32bit (i386)	6m 17s
test-fast (ubuntu-latest)	2m 34s
test-fast (windows-latest)	8m 41s
cargo-deny-advisories	31s
Tests pass	5s
	1h 48m 56s

Provide feedback