Add config option redis.password_path #3248

Job	Run time
changes	2s
check-lockfile	7s
lint-crlf	10s
lint-newsfile	33s
lint	20s
check-schema-delta	40s
Typechecking	1m 15s
check-sampleconfig	48s
lint-pydantic	53s
lint-clippy	0s
lint-clippy-nightly	0s
lint-readme	0s
lint-rustfmt	0s
linting-done	2s
calculate-test-jobs	8s
trial-olddeps	8m 25s
complement (monolith, SQLite)	13m 22s
portdb (3.8, 11)	3m 15s
complement (monolith, Postgres)	13m 33s
portdb (3.11, 15)	3m 23s
complement (workers, Postgres)	21m 24s
cargo-bench	0s
cargo-test	0s
trial-pypy	0s
sytest (focal)	9m 2s
trial (3.8, sqlite, all)	5m 48s
sytest (focal, postgres)	10m 10s
sytest (focal, multi-postgres, workers)	13m 30s
trial (3.8, postgres, 11, all)	13m 41s
sytest (focal, multi-postgres, workers, asyncio)	19m 15s
trial (3.8, sqlite)	5m 19s
export-data	2m 17s
tests-done	4s
	2h 27m 26s

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