chore: update node-fetch to ^2.6.5

[ddelgrosso1]

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Fixes #<issue_number_goes_here> 🦕

There was an issue with query parameters in node-fetch version 2.6.3. See node-fetch/node-fetch#1301. The node-js storage library had a few people raising the issue (googleapis/nodejs-storage#1600). I would like to update node-fetch to ^2.6.5 to avoid the bad version of node-fetch.