chore: upgrade workflows to ubuntu 22 images (#6776)

## What's the problem this PR addresses?

[Ubuntu 20 images have been deprecated by
Github.](https://github.blog/changelog/2025-01-15-github-actions-ubuntu-20-runner-image-brownout-dates-and-other-breaking-changes/)
[Workflows are failing because of
it.](https://github.com/yarnpkg/berry/actions/runs/14700798041/job/41249908502?pr=6734)

## How did you fix it?

Changed version `20.04` to `22.04`

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Author: SagnikPradhan

.github/workflows/integration-workflow.yml

@@ -215,7 +215,7 @@ jobs:
       matrix:
         # We run the ubuntu tests on multiple Node versions with 2 shards since they're the fastest.
         node: [18, 19, 20, 21, 22]
-        platform: [[ubuntu, 20.04]]
+        platform: [[ubuntu, 22.04]]
         shard: ['1/2', '2/2']
         include:
           # We run the rest of the tests on the minimum Node version we support with 3 shards.