upgrade opentelemetry-exporter-prometheus-remote-write to use protobuf 5.26

exporter/opentelemetry-exporter-prometheus-remote-write/proto/README.md

@@ -1,3 +1,3 @@
 ## Instructions
-1. Install protobuf tools. Can use your package manager or download from [GitHub](https://github.com/protocolbuffers/protobuf/releases/tag/v21.7)
+1. Install protobuf tools. Can use your package manager or download from [GitHub](https://github.com/protocolbuffers/protobuf/releases/tag/v29.3)
 2. Run `generate-proto-py.sh` from inside the `proto/` directory

exporter/opentelemetry-exporter-prometheus-remote-write/proto/generate-proto-py.sh

@@ -49,7 +49,7 @@ sed -i 's/import "gogoproto\/gogo.proto";/import "opentelemetry\/exporter\/prome
 echo "Removing clones..."
 rm -rf protobuf prometheus
 
-# Used libprotoc 3.21.1 & protoc 21.7
+# Used libprotoc 29.3
 echo "Compiling proto files to Python"
 protoc -I .  --python_out=../src ${SRC_DIR}/gogoproto/gogo.proto ${SRC_DIR}/remote.proto ${SRC_DIR}/types.proto
 

exporter/opentelemetry-exporter-prometheus-remote-write/pyproject.toml

@@ -27,7 +27,7 @@ classifiers = [
   "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
-  "protobuf ~= 4.21",
+  "protobuf ~= 5.26",
   "requests ~= 2.28",
   "opentelemetry-api ~= 1.12",
   "opentelemetry-sdk ~= 1.12",

exporter/opentelemetry-exporter-prometheus-remote-write/test-requirements.txt

@@ -9,7 +9,7 @@ idna==3.7
 iniconfig==2.0.0
 packaging==24.0
 pluggy==1.5.0
-protobuf==4.25.3
+protobuf==5.29.3
 py-cpuinfo==9.0.0
 pytest==7.4.4
 python-snappy==0.7.1