Upgrade miniscript/bitcoin dependency

Upgrade:

- bitcoin to v0.31.0
- miniscript to v11.0.0

Note: The bitcoin upgrade includes improvements to the
`Transaction::weight()` function, it appears those guys did good, we
no longer need to add the 2 additional weight units "just in case".

crates/bitcoind_rpc/Cargo.toml

@@ -14,8 +14,8 @@ readme = "README.md"
 
 [dependencies]
 # For no-std, remember to enable the bitcoin/no-std feature
-bitcoin = { version = "0.30", default-features = false }
-bitcoincore-rpc = { version = "0.17" }
+bitcoin = { version = "0.31", default-features = false }
+bitcoincore-rpc = { version = "0.18" }
 bdk_chain = { path = "../chain", version = "0.11", default-features = false }
 
 [dev-dependencies]

crates/bitcoind_rpc/tests/test_emitter.rs

@@ -350,7 +350,7 @@ fn tx_can_become_unconfirmed_after_reorg() -> anyhow::Result<()> {
         .rpc_client()
         .get_new_address(None, None)?
         .assume_checked();
-    let spk_to_track = ScriptBuf::new_v0_p2wsh(&WScriptHash::all_zeros());
+    let spk_to_track = ScriptBuf::new_p2wsh(&WScriptHash::all_zeros());
     let addr_to_track = Address::from_script(&spk_to_track, bitcoin::Network::Regtest)?;
 
     // setup receiver