Bump protobuf dependencies

MSRV is now 1.44.1.

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.44.0
+          toolchain: 1.44.1
           override: true
 
       # cargo fmt does not build the code, and running it in a fresh clone of
@@ -48,7 +48,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.44.0
+          toolchain: 1.44.1
           override: true
 
       - name: Fetch path to Zcash parameters
@@ -98,7 +98,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.44.0
+          toolchain: 1.44.1
           override: true
       - name: Add target
         run: rustup target add ${{ matrix.target }}

rust-toolchain

@@ -1 +1 @@
-1.44.0
+1.44.1

zcash_client_backend/Cargo.toml

@@ -19,12 +19,12 @@ ff = "0.8"
 group = "0.8"
 hex = "0.4"
 jubjub = "0.5"
-protobuf = "=2.14.0" # 2.15 has MSRV of 1.44.1
+protobuf = "2.15"
 subtle = "2"
 zcash_primitives = { version = "0.3", path = "../zcash_primitives" }
 
 [build-dependencies]
-protobuf-codegen-pure = "2.14"
+protobuf-codegen-pure = "2.15"
 
 [dev-dependencies]
 rand_core = "0.5"

zcash_client_sqlite/Cargo.toml

@@ -17,7 +17,7 @@ bs58 = { version = "0.3", features = ["check"] }
 ff = "0.8"
 group = "0.8"
 jubjub = "0.5"
-protobuf = "2"
+protobuf = "2.15"
 rand_core = "0.5.1"
 rusqlite = { version = "0.23", features = ["bundled"] }
 time = "0.1"