Switch buf dep to use pypi buf-bin

Seems like the `go run` version isn't caching build artifacts...?

Signed-off-by: Stefan VanBuren <svanburen@buf.build>

Author: stefanvanburen

poe_tasks.toml

@@ -1,8 +1,5 @@
 #:schema https://json.schemastore.org/partial-poe.json
 
-[env]
-BUF_VERSION = "v1.67.0"
-
 [tasks.bump]
 help = "Bump the project version"
 sequence = [
@@ -65,23 +62,23 @@ sequence = [
 [tasks.generate-conformance]
 help = "Generate conformance files"
 sequence = [
-  { cmd = "go run github.com/bufbuild/buf/cmd/buf@${BUF_VERSION} generate" },
+  { cmd = "buf generate" },
   { shell = "find test/gen -type f -exec sed -i '' 's/from connectrpc.conformance.v1/from gen.connectrpc.conformance.v1/' {} +", env = { "LC_ALL" = "c" } },
 ]
 cwd = "conformance"
 
 [tasks.generate-example]
 help = "Generate example files"
-cmd = "go run github.com/bufbuild/buf/cmd/buf@${BUF_VERSION} generate"
+cmd = "buf generate"
 cwd = "example"
 
 [tasks.generate-status]
 help = "Generate gRPC status"
-cmd = "go run github.com/bufbuild/buf/cmd/buf@${BUF_VERSION} generate"
+cmd = "buf generate"
 
 [tasks.generate-test]
 help = "Generate test files"
-cmd = "go run github.com/bufbuild/buf/cmd/buf@${BUF_VERSION} generate"
+cmd = "buf generate"
 cwd = "test"
 
 [tasks.lint]

pyproject.toml

@@ -40,6 +40,7 @@ Repository = "https://github.com/connectrpc/connect-python"
 dev = [
   # Needed to enable HTTP/2 in daphne
   "Twisted[tls,http2]==25.5.0",
+  "buf-bin==1.68.3",
   "asgiref==3.11.1",
   "brotli==1.2.0",
   "connect-python-example",