fix(db): bump sqlx to 0.9, honour no-transaction

sqlx-sqlite 0.8 ignored Migration.no_tx and wrapped every
migration in a transaction, where PRAGMA foreign_keys = OFF
is a no-op — so any table rebuild cascade-deleted children.
0.9 honours `-- no-transaction`, so 0014 drops its
movie_releases_backup / episode_releases_backup workaround
and runs the plain rebuild recipe with foreign keys off.
A migration test rebuilds both parents from a pre-0014
database and asserts the child link rows survive.

Closes #155

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/arr-db/migrations/0014_parked_state.sql

@@ -1,11 +1,15 @@
+-- no-transaction
 -- #108: a vanished torrent must not re-grab. Overrides #86, which reopened
 -- the gap (state = 'missing', wanted untouched) so the next tick re-grabbed
 -- the same release. Adds 'parked' so the daemon can clear `wanted` and mark
 -- the title honestly instead — distinct from 'missing' (an open gap) and
 -- 'available' (satisfied). SQLite cannot alter a CHECK, so both tables are
 -- rebuilt (see 0007).
+--
+-- #155: runs outside a transaction so `PRAGMA foreign_keys = OFF` takes
+-- effect and dropping the old tables does not cascade into their children.
 
-CREATE TABLE movie_releases_backup AS SELECT * FROM movie_releases;
+PRAGMA foreign_keys = OFF;
 
 CREATE TABLE movies_new (
     id                INTEGER PRIMARY KEY,
@@ -63,11 +67,6 @@ BEGIN
     SELECT RAISE(ABORT, 'movies require a movie root');
 END;
 
-INSERT INTO movie_releases SELECT * FROM movie_releases_backup;
-DROP TABLE movie_releases_backup;
-
-CREATE TABLE episode_releases_backup AS SELECT * FROM episode_releases;
-
 CREATE TABLE episodes_new (
     id               INTEGER PRIMARY KEY,
     season_id        INTEGER NOT NULL REFERENCES seasons (id) ON DELETE CASCADE,
@@ -102,5 +101,4 @@ CREATE INDEX episodes_pending_search
 
 CREATE INDEX episodes_state ON episodes (state);
 
-INSERT INTO episode_releases SELECT * FROM episode_releases_backup;
-DROP TABLE episode_releases_backup;
+PRAGMA foreign_keys = ON;