opentelemetry-cpp: add version 1.9.1, update dependencies

[toge]

Specify library name and version: opentelemetry-cpp/*

---

• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[ghost]

I detected other pull requests that are modifying opentelemetry-cpp/all recipe:

• [opentelemetry-cpp/1.8.1] Updated protobuf dep #17926
• opentelemetry: export with_examples parameter #16220
• opentelemetry-cpp: add version 1.8.2, update dependencies #15805

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prs so don't hesitate to report issues/improvements there.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 4 (5d550edfcbbf7965c194b3e5740bc636e896ff19):

• opentelemetry-cpp/1.6.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.3.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.7.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.8.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.4.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.4.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.0.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.2.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.9.1@:
  All packages built successfully! (All logs)

---

Conan v2 pipeline ✔️

Note: Conan v2 builds may be required once they are on the v2 ready list

All green in build 4 (5d550edfcbbf7965c194b3e5740bc636e896ff19):

• opentelemetry-cpp/1.7.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.9.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.8.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.6.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.4.1@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.2.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.3.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.4.0@:
  All packages built successfully! (All logs)

• opentelemetry-cpp/1.0.1@:
  All packages built successfully! (All logs)

[uilianries]

LGTM