deps: drop unused regex, unify reqwest on 0.12

x-media's reqwest 0.13 dragged in quinn/rustls/aws-lc-rs (cmake C
build) alongside teloxide's 0.12; unifying on 0.12 removes the whole
second TLS/QUIC stack from the build and image. The unused regex dep in
xmedia-bot is gone; x-media keeps url (the bsky HLS remux uses it).

crates/x-media/Cargo.toml

@@ -4,7 +4,7 @@ version = "1.0.8"
 edition = "2024"
 
 [dependencies]
-reqwest = { version = "0.13", features = ["json", "query", "form"] }
+reqwest = { version = "0.12", features = ["json"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 regex = "1.12"

crates/xmedia-bot/Cargo.toml

@@ -12,7 +12,6 @@ log = "0.4"
 pretty_env_logger = "0.5"
 dotenv = "0.15"
 url = "2.5.2"
-regex = "1.12"
 html-escape = "0.2"
 rusqlite = { version = "0.32", features = ["bundled"] }
 rand = "0.8"