Ensure we're using the latest versions of iOS for testing

[joshedney]

Goal

• Update the iOS versions we're using for tests
• Move to activate_app and terminate_app

Bump the stacktrace we're looking for Handled native promise rejection with native stacktrace and Unhandled native promise rejection with native stacktrace.

Looking at the stack traces, we appear to have an additional:

{
  "method"=>"<redacted>",
  "type"=>"cocoa",
  "machoVMAddress"=>"0x19011a000",
  "machoFile"=>"libdispatch.dylib",
  "symbolAddress"=>"0x1a2b64394",
  "machoUUID"=>"81D355DF-266A-3010-BAB8-113B76A206C1",
  "machoLoadAddress"=>"0x1a2b4e000",
  "frameAddress"=>"0x1a2b64528"
},

Before the _pthread_wqthread stacktrace.

Testing

Covered by CI

[github-actions]

@bugsnag/browser bundle size diff

	Minified	Minfied + Gzipped
Before	50.40 kB	14.92 kB
After	50.40 kB	14.92 kB
±	No change	No change

code coverage diff

<temporarily disabled>

Generated by 🚫 dangerJS against c5bc09c

[twometresteve]

LGTM so long as the JS team are happy with the extra stackframe

[gingerbenw]

Happy from my side - we can expect some changes in these libraries with a new iOS version.