zcash_proofs: Use bellman 0.11.1 to fix non-multicore compilation bug

zcash_proofs/CHANGELOG.md

@@ -8,7 +8,7 @@ and this library adheres to Rust's notion of
 ## [Unreleased]
 ### Changed
 - MSRV is now 1.51.0.
-- Bumped dependencies to `ff 0.11`, `group 0.11`, `bellman 0.11`,
+- Bumped dependencies to `ff 0.11`, `group 0.11`, `bellman 0.11.1`,
   `bls12_381 0.6`, `jubjub 0.8`.
 - `zcash_proofs::sapling::SaplingVerificationContext::new` now takes a
   `zip216_enabled` boolean; this is used to control how RedJubjub signatures are

zcash_proofs/Cargo.toml

@@ -15,7 +15,7 @@ edition = "2018"
 all-features = true
 
 [dependencies]
-bellman = { version = "0.11", default-features = false, features = ["groth16"] }
+bellman = { version = "0.11.1", default-features = false, features = ["groth16"] }
 blake2b_simd = "0.5"
 bls12_381 = "0.6"
 byteorder = "1"