Bump io.opentelemetry.javaagent:opentelemetry-javaagent (#648)

Bumps [io.opentelemetry.javaagent:opentelemetry-javaagent](https://github.com/open-telemetry/opentelemetry-java-instrumentation) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-java-instrumentation@v2.5.0...v2.6.0)

---
updated-dependencies:
- dependency-name: io.opentelemetry.javaagent:opentelemetry-javaagent
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

other-examples/java/agent-nr-config/application/build.gradle

@@ -16,7 +16,7 @@ configurations {
 dependencies {
   implementation 'io.opentelemetry:opentelemetry-api'
 
-  agent("io.opentelemetry.javaagent:opentelemetry-javaagent:2.5.0")
+  agent("io.opentelemetry.javaagent:opentelemetry-javaagent:2.6.0")
 
   implementation platform(SpringBootPlugin.BOM_COORDINATES)
   implementation 'org.springframework.boot:spring-boot-starter-web'