Update the release date of Safari 6.1 (#11145)
Update the release date of Safari 6.1 (#11145)

The 2013-06-11 date was originally added here:
https://github.com/mdn/browser-compat-data/pull/595

Source for 2013-10-22:
https://en.wikipedia.org/wiki/Safari_version_history#Safari_6

This also makes more sense in light of the relationship between Safari 6
and 7.1, see https://github.com/mdn/browser-compat-data/issues/9423#issuecomment-796880969.
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data