Update to buf.gen.yaml v2

Makefile

@@ -47,8 +47,6 @@ build: generate ## Build all packages
 
 .PHONY: generate
 generate: $(BIN)/buf $(BIN)/license-header ## Regenerate code and licenses
-	rm -rf internal/gen
-	rm -rf testing/grpcwebclient/gen
 	buf generate proto
 	license-header \
 		--license-type apache \
@@ -138,7 +136,7 @@ $(BIN)/grpcserver: Makefile generate
 
 $(BIN)/buf: Makefile
 	@mkdir -p $(@D)
-	$(GO) install github.com/bufbuild/buf/cmd/buf@v1.26.1
+	$(GO) install github.com/bufbuild/buf/cmd/buf@v1.44.0
 
 $(BIN)/license-header: Makefile
 	@mkdir -p $(@D)

buf.gen.yaml

@@ -1,21 +1,23 @@
-version: v1
+version: v2
 managed:
   enabled: true
-  go_package_prefix:
-    default: connectrpc.com/conformance/internal/gen/proto/go
+  override:
+    - file_option: go_package_prefix
+      value: connectrpc.com/conformance/internal/gen/proto/go
+clean: true
 plugins:
-  - plugin: buf.build/protocolbuffers/go:v1.31.0
+  - remote: buf.build/protocolbuffers/go:v1.31.0
     out: internal/gen/proto/go
     opt: paths=source_relative
-  - plugin: buf.build/connectrpc/go
+  - remote: buf.build/connectrpc/go
     out: internal/gen/proto/go
     opt: paths=source_relative
-  - plugin: buf.build/grpc/go:v1.3.0
+  - remote: buf.build/grpc/go:v1.3.0
     out: internal/gen/proto/go
     opt: paths=source_relative
-  - plugin: buf.build/grpc/web:v1.5.0
+  - remote: buf.build/grpc/web:v1.5.0
     out: testing/grpcwebclient/gen/proto
     opt: import_style=typescript,mode=grpcweb
-  - plugin: buf.build/protocolbuffers/js:v3.21.2
+  - remote: buf.build/protocolbuffers/js:v3.21.2
     out: testing/grpcwebclient/gen/proto
     opt: import_style=commonjs,binary

buf.yaml

@@ -0,0 +1,10 @@
+version: v2
+modules:
+  - path: proto
+    name: buf.build/connectrpc/conformance
+lint:
+  use:
+    - STANDARD
+breaking:
+  use:
+    - FILE