Upgrade to grpc-1.42.0 (#152)

- Upgraded the pinned nixpkgs to nixos-21.11 which contains grpc-1.42.0. This requires no code changes to `grpc-haskell` and `grpc-haskell-core` libraries.
- Picked up latest commits of `proto3-{wire,suite}` and adjusted transitive dependencies
- Switched to python 3 because `grpcio-tools` requires it. Adjusted test scripts accordingly.
- Upgraded to latest CI action versions.

This change is minimal compared to #138 and will solve some test failures in that PR. Hopefully, this will make it easier to move that PR forward.

.github/workflows/ci.yml

@@ -8,9 +8,9 @@ jobs:
   build-linux:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.0.2
+      - uses: actions/checkout@v3.5.3
         name: Checkout
-      - uses: cachix/install-nix-action@v20 
+      - uses: cachix/install-nix-action@v21
         name: Install Nix
       - uses: cachix/cachix-action@v12
         name: Set up Cachix
@@ -21,9 +21,9 @@ jobs:
   build-macos:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3.0.2
+      - uses: actions/checkout@v3.5.3
         name: Checkout
-      - uses: cachix/install-nix-action@v20 
+      - uses: cachix/install-nix-action@v21
         name: Install Nix
       - uses: cachix/cachix-action@v12
         name: Set up Cachix

README.md

@@ -7,7 +7,7 @@ have extended and released under the same [`LICENSE`](./LICENSE)
 Installation
 ------------
 
-**The current version of this library requires gRPC version 1.34.1. Newer versions may work but have not been tested.**
+**The current version of this library requires gRPC version 1.42.0. Newer versions may work but have not been tested.**
 
 Usage
 -----

core/grpc-haskell-core.cabal

@@ -96,7 +96,7 @@ test-suite tests
     , proto3-suite
     , transformers
     , safe
-    , clock >=0.6.0 && <0.8.0
+    , clock >=0.6.0 && <0.9
     , turtle >= 1.2.0
     , text
     , QuickCheck >=2.8 && <3.0