fix(setup-e2e-env): Replace CocoaPods specs cache with Pods cache to prevent stale trunk errors

[cmd-ob]

• Replace ~/.cocoapods/repos cache with ios/Pods cache
• Prevents HTTP2 framing errors caused by stale trunk specs reconciliation with CDN

Problem

The current caching of ~/.cocoapods/repos (specs index) can become stale. When pod install --repo-update attempts to reconcile stale cached specs with fresh CDN data, it can fail with:

[!] CDN: trunk URL couldn't be downloaded: https://cdn.cocoapods.org/Specs/a/b/d/Sentry/8.58.0/Sentry.podspec.json Response: Error in the HTTP2 framing layer

This has been causing intermittent iOS E2E setup failures across multiple PRs.

Solution

• Remove caching of ~/.cocoapods/repos (specs index is small, downloads quickly)
• Add caching of ios/Pods

---

Note

Adds an iOS-only step in setup-e2e-env to clear CocoaPods trunk before installing pods.

• New step: pod repo remove trunk || true to prevent stale spec issues prior to bundle exec pod install --repo-update
• Change is limited to .github/actions/setup-e2e-env/action.yml and only runs when platform == 'ios'

^{Written by Cursor Bugbot for commit e613b9b. This will update automatically on new commits. Configure here.}

[christopherferreira9]

is the key name change and missing restore-keys intentional here?
Also, have we considered removing the trunk with pod repo remove trunk?

[cmd-ob]

yes I am doing this as a safety measure for now - #202 (comment)