fix: silence ginkgo versions mismatch warning

[avorima]

I saw the following warning in the e2e logs:

/home/runner/work/kamaji/kamaji/bin/ginkgo -v ./e2e
Ginkgo detected a version mismatch between the Ginkgo CLI and the version of Ginkgo imported by your packages:
  Ginkgo CLI Version:
    2.6.0
  Mismatched package versions found:
    2.17.1 used by e2e

The go install command will use look into the go.mod if no version is provided for a dependency.

[netlify]

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[prometherion]

Thanks, very appreciated!