Add workaround workflow to extract credentials #336

Job	Run time
detect-noop	9s
publish-provider-package / publish-artifacts	3m 48s
unit-tests	4m 44s
local-deploy	4m 51s
report-breaking-changes	11s
lint	8m 59s
check-diff	1m 52s
publish-provider-package / mirror-to-xpkg-upbound-io	0s
	24m 34s

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