Update conformance module to use newer version of Go and quic-go depe…

…ndency (#732)

This is to get us on the latest version of quic-go, v0.43.0. That
requires Go 1.21. It also includes some breaking changes, which required
a change in the connectrpc/conformance code, too. So this pins the
latest commit of that dependency, too.

.github/workflows/ci.yaml

@@ -50,6 +50,7 @@ jobs:
         with:
           go-version: ${{ matrix.go-version }}
       - name: Run Conformance Tests
+        if: matrix.go-version != '1.20.x' # Conformance requires Go 1.21+
         run: make runconformance
   slowtest:
     runs-on: ubuntu-latest

internal/conformance/go.mod

@@ -1,47 +1,45 @@
 module connectrpc.com/connect/internal/conformance
 
-go 1.20
+go 1.21
 
-require connectrpc.com/conformance v1.0.2
+require connectrpc.com/conformance v1.0.3-0.20240429194039-7ca9fdd99084
 
 require (
-	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.31.0-20231106192134-1baebb0a1518.2 // indirect
-	connectrpc.com/connect v1.16.0 // indirect
+	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.33.0-20240401165935-b983156c5e99.1 // indirect
+	connectrpc.com/connect v1.16.1 // indirect
 	github.com/andybalholm/brotli v1.1.0 // indirect
-	github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230512164433-5d1fd1a340c9 // indirect
-	github.com/bufbuild/protovalidate-go v0.4.0 // indirect
-	github.com/bufbuild/protoyaml-go v0.1.8 // indirect
+	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
+	github.com/bufbuild/protovalidate-go v0.6.1 // indirect
+	github.com/bufbuild/protoyaml-go v0.1.9 // indirect
 	github.com/cenkalti/backoff/v4 v4.1.1 // indirect
 	github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/cel-go v0.18.1 // indirect
+	github.com/google/cel-go v0.20.1 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
 	github.com/improbable-eng/grpc-web v0.15.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/klauspost/compress v1.17.7 // indirect
+	github.com/klauspost/compress v1.17.8 // indirect
 	github.com/onsi/ginkgo/v2 v2.9.5 // indirect
 	github.com/quic-go/qpack v0.4.0 // indirect
-	github.com/quic-go/qtls-go1-20 v0.4.1 // indirect
-	github.com/quic-go/quic-go v0.40.1 // indirect
-	github.com/rs/cors v1.10.1 // indirect
+	github.com/quic-go/quic-go v0.43.0 // indirect
+	github.com/rs/cors v1.11.0 // indirect
 	github.com/spf13/cobra v1.8.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stoewer/go-strcase v1.3.0 // indirect
-	go.uber.org/mock v0.3.0 // indirect
-	golang.org/x/crypto v0.21.0 // indirect
-	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
-	golang.org/x/mod v0.12.0 // indirect
-	golang.org/x/net v0.23.0 // indirect
-	golang.org/x/sync v0.6.0 // indirect
-	golang.org/x/sys v0.18.0 // indirect
+	go.uber.org/mock v0.4.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/exp v0.0.0-20240325151524-a685a6edb6d8 // indirect
+	golang.org/x/mod v0.16.0 // indirect
+	golang.org/x/net v0.24.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/tools v0.13.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20240123012728-ef4313101c80 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240123012728-ef4313101c80 // indirect
-	google.golang.org/grpc v1.62.1 // indirect
+	golang.org/x/tools v0.19.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240401170217-c3f982113cda // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda // indirect
+	google.golang.org/grpc v1.63.2 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	nhooyr.io/websocket v1.8.6 // indirect