saml2aws: fix go_import_path.

[ericonr]

@ScOut3R

General

• This is a new package and it conforms to the quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR

[ScOut3R]

Thank you @ericonr, I think this was preventing me from updating saml2aws. :)

[ericonr]

@ScOut3R it seems they hadn't changed the module path in the version we ship... Can you take the change and include it in your PR to update the package? Then I will close this PR.

[ericonr]

@ScOut3R I've switched the PR to be an update, please test it out :)