Add release binary striping

[Razican]

Our binaries are currently quite big by default. Most of it (around 65%) is due to ICU data. But there are things we can do. Before going for more drastic solutions, such as abort panic, striping the binaries helps slightly.

In this case, striping helps only slightly:

• boa binary: from 26 MB to 25 MB
• boa_tester binary: from 27 MB to 25 MB

I did some further tests by adding panic = "abort", and this reduced sizes even further:

• boa binary: 23MB
• boa_tester binary: 24M

And we would lose panic unwinding, so I don't see too much benefit.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	50,268	50,268	0
Passed	42,754	42,754	0
Ignored	1,391	1,391	0
Failed	6,123	6,123	0
Panics	0	0	0
Conformance	85.05%	85.05%	0.00%

[jedel1043]

Nice to have this size decrease. Also agreed that removing unwinds is not worth the small size decrease.

[HalidOdat]

Looks good to me! :)