fix(ci): Pin perf metrics ios builds to macos-12 and xcode 14.2

[krystofwoldrich]

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[github-actions]

Android (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	365.59 ms	407.64 ms	42.05 ms
Size	7.15 MiB	8.21 MiB	1.06 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
f06c879+dirty	361.27 ms	407.88 ms	46.61 ms
d197b5c+dirty	258.75 ms	313.61 ms	54.86 ms
1d86dd6+dirty	335.76 ms	371.22 ms	35.46 ms
dadc233+dirty	363.19 ms	370.37 ms	7.18 ms
728164b+dirty	335.93 ms	342.94 ms	7.01 ms
e2b64fe+dirty	258.82 ms	304.26 ms	45.44 ms
0db0c72+dirty	335.20 ms	351.06 ms	15.86 ms
d361d38+dirty	257.72 ms	318.76 ms	61.04 ms
ad6c299+dirty	336.47 ms	362.89 ms	26.42 ms
27ef4ee+dirty	296.71 ms	351.00 ms	54.29 ms

App size

Revision	Plain	With Sentry	Diff
f06c879+dirty	7.15 MiB	8.12 MiB	997.78 KiB
d197b5c+dirty	7.15 MiB	8.09 MiB	962.72 KiB
1d86dd6+dirty	7.15 MiB	8.13 MiB	1002.18 KiB
dadc233+dirty	7.15 MiB	8.04 MiB	910.84 KiB
728164b+dirty	7.15 MiB	8.12 MiB	997.71 KiB
e2b64fe+dirty	7.15 MiB	8.07 MiB	947.16 KiB
0db0c72+dirty	7.15 MiB	8.04 MiB	911.02 KiB
d361d38+dirty	7.15 MiB	8.08 MiB	959.34 KiB
ad6c299+dirty	7.15 MiB	8.04 MiB	912.17 KiB
27ef4ee+dirty	7.15 MiB	8.08 MiB	959.49 KiB