Use ephemeral credentials from AWS OIDC provider

[coveralls-official[bot]]

Pull Request Test Coverage Report for Build 5812835991

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 11 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.1%) to 78.446%

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Files with Coverage Reduction	New Missed Lines	%
src/compiler/sexp.rs	11	78.05%
<!--	Total:	11		-->

Totals
Change from base Build 5802592651:	-0.1%
Covered Lines:	7308
Relevant Lines:	9316

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💛 - Coveralls

[prozacchiwawa]

ok, poke when the other pr appears. will be watching them.

[Starttoaster]

ok, poke when the other pr appears. will be watching them.

@prozacchiwawa sorry, should have specified the other PR that this one relies on was in a different repo which has just been merged. This one should be g2go now

[prozacchiwawa]

gotcha