feat: add logs and update deps in java services

[JamieDanielson]

Which problem is this PR solving?

• closes java year-service using honeycomb-opentelemetry-sdk #969
• close a buncha dependabots

Short description of the changes

• update all deps in java services
• update java year to use vanilla otel, specifically the java agent
• update java year to use log4j logs
• update docker-compose.java.yml to include OTEL_LOGS_EXPORTER=otlp

Some findings:

• Using java agent <2.x, set OTEL_LOGS_EXPORTER=otlp
• Using java agent >=2.x, exporter is enabled by default
• For more fine-tuning, use log4j2.xml or in this specific service that uses Springboot, use log4j2-spring.xml. Some instructions are here and here.
• I tried getting a better JSON-formatted log but it didn't quite look as I wanted and so I wasn't sure it was worth it to add here (would be included in above step). I tried both JSONLayout (deprecated) and JsonTemplateLayout.
• Also for the log itself, the MapMessage showed up in Honeycomb as an empty string "", whereas ObjectMessage showed {selected_year=2015} which is why I went with it. Maybe that's something to look further into, as MapMessage seems like it might be a nicer format.

How to verify this has the expected result

From the root directory run tilt up java, or from the java year service set env vars including OTEL_LOGS_EXPORTER=otlp then ./gradlew build and ./gradlew bootRun... and curl the endpoint curl localhost:6001/year.

The log for selected year should show up in Honeycomb on the YearService.getYear span

[JamieDanielson]

So this works, but there's 2 main problems with it in my mind:

1. It seems to require 2.x of java agent to work out of the box. I think this is because the appender is included with the spring boot starter now by default and some other configuration with the log sdk might be necessary otherwise, which gets weird with the agent and avoiding double initialization.
2. Structured logs are not really working as the log body is just {selected_year=2020}. I've tried various forms of JSONLayout but I think the log4j2.xml file isn't actually being picked up and used properly.

Edit: updated to include environment variable and added extra notes to PR description. This works OOTB for both 1.x and 2.x of otel-java, just needs the OTEL_LOGS_EXPORTER env var on 1.x.

[robbkidd]