Upgrade grafana plugin sdk to latest version

[ddelnano]

Summary: Upgrade grafana plugin sdk to latest version

It's been a while since we've upgraded our core dependencies. Since I was already making a few changes here, I wanted to upgrade the plugin sdk to a recent version. I testing a variety of things, but please let me know if there is anything else I should verify in addition to my testing done.

Testing done: Built plugin and configured a data source with a local Grafana and tested the following:

• Ran a variety of PxL script queries
• Created dashboards from the scripts I ran
• Used various query inspector settings to try and trigger more plugin behavior