chore: Spring Boot 3.3 updates

[burkedavison]

Note some questionable changes:

1. Changing the Sender bean to StackdriverSender due to the change in zipkin-gcp shown here: https://github.com/openzipkin/zipkin-gcp/pull/214/files

   • StackdriverSender does not extend Sender.
   • However, this is consistent with Spring Boot's upgrade: https://github.com/spring-projects/spring-boot/pull/39049/files

2. SpanBytesEncoder has changed packages.

3. StackdriverEncoder has changed packages - and as indicated in https://github.com/openzipkin/zipkin-gcp/releases/tag/2.0.0 we are now using StackdriverV2Encoder to eliminate the direct dependency on io.zipkin.zipkin2:zipkin.

[sonarcloud[bot]]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud