[7.x](backport #28229) Update cloud.google.com/go library

[mergify]

This is an automatic backport of pull request #28229 done by Mergify.
Cherry-pick of 0376061 has failed:

On branch mergify/bp/7.x/pr-28229
Your branch is up to date with 'origin/7.x'.

You are currently cherry-picking commit 03760614df.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   CHANGELOG.next.asciidoc
	modified:   NOTICE.txt
	modified:   go.mod

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   go.sum

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[botelastic]

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[elasticmachine]

💔 Build Failed

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Build stats

• Start Time: 2021-10-05T10:56:40.070+0000

• Duration: 4 min 55 sec

• Commit: 81d214b

Steps errors

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Git fetch

• Took 0 min 3 sec . View more details here
• Description: git fetch https://${GIT_USERNAME}:${GIT_PASSWORD}@github.com/elastic/beats.git +refs/pull/*/head:refs/remotes/origin/pr/* > fetch.log 2>&1

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• Description: fetch.log

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