[chore]: Bump go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc (#2818)

Bumps [go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc](https://github.com/open-telemetry/opentelemetry-go) from 1.24.0 to 1.25.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-go/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-go/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-go/compare/v1.24.0...v1.25.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/go.opentelemetry.io/otel/CONTRIBUTING.md

@@ -201,6 +201,16 @@ You can install and run a "local Go Doc site" in the following way:
 [`go.opentelemetry.io/otel/metric`](https://pkg.go.dev/go.opentelemetry.io/otel/metric)
 is an example of a very well-documented package.
 
+### README files
+
+Each (non-internal, non-test, non-documentation) package must contain a
+`README.md` file containing at least a title, and a `pkg.go.dev` badge.
+
+The README should not be a repetition of Go doc comments.
+
+You can verify the presence of all README files with the `make verify-readmes`
+command.
+
 ## Style Guide
 
 One of the primary goals of this project is that it is actually used by