.github/workflows: Avoid running the e2e-tests workflow on doc-only pull requests (#2299)
.github/workflows: Avoid running the e2e-tests workflow on doc-only pull requests (#2299)

Update the e2e-tests.yml github workflow and avoid running that action
on PRs that only change the doc directory.

Signed-off-by: timflannagan <94c8c56cb3e3c35b9b75806bbeaebee9ba64af5c@gmail.com>
operator-framework/operator-lifecycle-manager,operator-framework/operator-lifecycle-manager