[8.5](backport #1444) [automation] Update go release version 1.18.7

[mergify]

This is an automatic backport of pull request #1444 done by Mergify.

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More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
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Finally, you can contact us on https://mergify.com

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2022-10-11T14:05:06.731+0000

• Duration: 22 min 44 sec

Test stats 🧪

Test	Results
Failed	0
Passed	4963
Skipped	17
Total	4980

💚 Flaky test report

Tests succeeded.

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To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

• /package : Generate the packages.

• run integration tests : Run the Elastic Agent Integration tests.

• run end-to-end tests : Generate the packages and run the E2E Tests.

• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	97.333% (73/75)	👍
Files	67.797% (160/236)	👍
Classes	68.182% (315/462)	👍
Methods	52.415% (890/1698)	👍
Lines	38.725% (9595/24777)	👎 -0.024
Conditionals	100.0% (0/0)	💚