chore: Skip jobs/steps that require secrets for non contributors

[itaybre]

📜 Description

Skips some (non critical) jobs when a PR comes from an external user to facilitate collaboration

💡 Motivation and Context

Some steps require the use secrets, thus they fail when running from a fork.
This should let us receive PRs from users external to Sentry.

💚 How did you test it?

📝 Checklist

You have to check all boxes before merging:

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

Closes #7128

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1223.91 ms	1238.25 ms	14.34 ms
Size	24.15 KiB	1.03 MiB	1.01 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
35c962f	1207.61 ms	1235.90 ms	28.29 ms
650d802	1231.86 ms	1255.64 ms	23.78 ms
8ea5293	1242.70 ms	1262.25 ms	19.55 ms
e58d7bf	1219.98 ms	1242.39 ms	22.41 ms
4558de2	1225.29 ms	1258.35 ms	33.06 ms
32f2329	1224.36 ms	1257.33 ms	32.98 ms
0f410ad	1193.34 ms	1255.49 ms	62.15 ms
4be5cd8	1222.35 ms	1251.43 ms	29.07 ms
018037b	1209.31 ms	1228.33 ms	19.03 ms
5aa3ce5	1222.78 ms	1245.39 ms	22.61 ms

App size

Revision	Plain	With Sentry	Diff
35c962f	23.75 KiB	854.77 KiB	831.02 KiB
650d802	23.74 KiB	913.13 KiB	889.39 KiB
8ea5293	23.75 KiB	852.24 KiB	828.49 KiB
e58d7bf	24.15 KiB	1.01 MiB	1014.91 KiB
4558de2	24.14 KiB	1.03 MiB	1.00 MiB
32f2329	23.75 KiB	1.01 MiB	1016.02 KiB
0f410ad	24.14 KiB	1.01 MiB	1014.82 KiB
4be5cd8	23.75 KiB	980.80 KiB	957.06 KiB
018037b	23.75 KiB	867.16 KiB	843.41 KiB
5aa3ce5	23.75 KiB	904.54 KiB	880.79 KiB

[itaybre]

Aside from the XCFramework check (which also failed here), everything passed on #7125

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.720%. Comparing base (33ade5e) to head (b9932c8).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #7124       +/-   ##
=============================================
+ Coverage   84.716%   84.720%   +0.003%     
=============================================
  Files          459       459               
  Lines        27494     27494               
  Branches     12120     12125        +5     
=============================================
+ Hits         23292     23293        +1     
- Misses        3942      4162      +220     
+ Partials       260        39      -221     

see 36 files with indirect coverage changes

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[philprime]

Almost LGTM

[philprime]

LGTM