chore(deps): update module version to match tag major version

[smcavallo]

Signed-off-by: smcavallo [email protected]

Description

Update module version to match tag version.

The ultimate goal is to allow this module to be published to the go artifact registry
The latest current version there is 2.50.2 which is the last version 2 which was tagged.
See on the registry - https://pkg.go.dev/github.com/newrelic/terraform-provider-newrelic/v2
See the tags - https://github.com/newrelic/terraform-provider-newrelic/releases?page=10

Bumping to /v3 to match the tag version and enable an artifact to be published.

Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

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• My commit message follows conventional commits
• My code is formatted to Go standards
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes. Go here for instructions on running tests locally.

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