build(deps): bump jubjub from 0.3.0 to 0.4.0

Bumps [jubjub](https://github.com/zkcrypto/jubjub) from 0.3.0 to 0.4.0.
- [Release notes](https://github.com/zkcrypto/jubjub/releases)
- [Changelog](https://github.com/zkcrypto/jubjub/blob/master/RELEASES.md)
- [Commits](https://github.com/zkcrypto/jubjub/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -307,6 +307,18 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "bls12_381"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4bb0547678ace536b8bd0cb9c033cffd6a8a660b70cbe0da3bb44a1dbda8ad0"
+dependencies = [
+ "byteorder",
+ "ff",
+ "rand_core 0.5.1",
+ "subtle",
+]
+
 [[package]]
 name = "bs58"
 version = "0.3.1"
@@ -772,6 +784,17 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 
+[[package]]
+name = "ff"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01d11efdc125f2647dde5a0f5f88010a5b0f89b700f86052afa1d148c4696047"
+dependencies = [
+ "byteorder",
+ "rand_core 0.5.1",
+ "subtle",
+]
+
 [[package]]
 name = "fixed-hash"
 version = "0.6.1"
@@ -977,6 +1000,19 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
+[[package]]
+name = "group"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7010d72d6222af90b421f4dbc9c1f05a6d658cce9ed35d441c3dda0ede59fee"
+dependencies = [
+ "byteorder",
+ "ff",
+ "rand 0.7.3",
+ "rand_xorshift",
+ "subtle",
+]
+
 [[package]]
 name = "gumdrop"
 version = "0.7.0"
@@ -1207,7 +1243,21 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aaacc6b2b5fa79a5bd49de8439534b1f98886f06b88da02afeb968d60678b978"
 dependencies = [
- "bls12_381",
+ "bls12_381 0.1.1",
+ "subtle",
+]
+
+[[package]]
+name = "jubjub"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3b0d7e8d9439803f270fbeb2285f2818dfa989ecf47465fa4c87a59ea9c90e6"
+dependencies = [
+ "bls12_381 0.2.0",
+ "byteorder",
+ "ff",
+ "group",
+ "rand_core 0.5.1",
  "subtle",
 ]
 
@@ -1946,7 +1996,7 @@ dependencies = [
  "blake2b_simd",
  "byteorder",
  "digest 0.9.0",
- "jubjub",
+ "jubjub 0.3.0",
  "rand_core 0.5.1",
  "serde",
  "thiserror",
@@ -3050,7 +3100,7 @@ dependencies = [
  "equihash",
  "futures",
  "hex",
- "jubjub",
+ "jubjub 0.4.0",
  "lazy_static",
  "primitive-types",
  "proptest",

zebra-chain/Cargo.toml

@@ -17,7 +17,7 @@ byteorder = "1.3"
 chrono = { version = "0.4", features = ["serde"] }
 futures = "0.3"
 hex = "0.4"
-jubjub = "0.3.0"
+jubjub = "0.4.0"
 lazy_static = "1.4.0"
 primitive-types = "0.7.2"
 rand_core = "0.5.1"