Update grafana-plugin-sdk-go to 0.251

[zoltanbedi]

This pull request includes updates to the cspell.config.json file, upgrades to dependencies in go.mod, and adds nolint comments in pkg/main.go to temporarily suppress static analysis warnings.

Dependency updates:

• go.mod: Upgraded multiple dependencies to their latest versions, including github.com/grafana/grafana-plugin-sdk-go, github.com/gorilla/mux, and go.opentelemetry.io packages. [1] [2]

Code linting:

• pkg/main.go: Added //nolint:staticcheck comments to ignore static analysis warnings for now.