Bump opentelemetry-exporter-otlp from 0.26.2 to 0.26.3

Bumps [opentelemetry-exporter-otlp](https://github.com/open-telemetry/opentelemetry-ruby) from 0.26.2 to 0.26.3.
- [Release notes](https://github.com/open-telemetry/opentelemetry-ruby/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-ruby/blob/main/exporter/otlp/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-ruby@opentelemetry-exporter-otlp/v0.26.2...opentelemetry-exporter-otlp/v0.26.3)

---
updated-dependencies:
- dependency-name: opentelemetry-exporter-otlp
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -189,7 +189,7 @@ GEM
     opentelemetry-api (1.2.3)
     opentelemetry-common (0.20.0)
       opentelemetry-api (~> 1.0)
-    opentelemetry-exporter-otlp (0.26.2)
+    opentelemetry-exporter-otlp (0.26.3)
       google-protobuf (~> 3.14)
       googleapis-common-protos-types (~> 1.3)
       opentelemetry-api (~> 1.1)