DRIVERS-3232 Move ECR login to before Assuming Team Role

[blink1073]

In this build we successfully uploaded to S3. There is a separate failure in the python script after the upload that I will address separately.

Completed 384 Bytes/384 Bytes (719 Bytes/s) with 1 file(s) remaining
upload: ./authorized-publication.txt to s3://***/pymongo-auth-aws/1.4.0.dev1/authorized-publication.txt
Completed 87 Bytes/87 Bytes (280 Bytes/s) with 1 file(s) remaining
upload: ./code-scanning-alerts.json to s3://***/pymongo-auth-aws/1.4.0.dev1/code-scanning-alerts.json
Completed 1.5 KiB/1.5 KiB (4.9 KiB/s) with 1 file(s) remaining
upload: ./cyclonedx.sbom.json to s3://***/pymongo-auth-aws/1.4.0.dev1/cyclonedx.sbom.json
Completed 620 Bytes/620 Bytes (1.7 KiB/s) with 1 file(s) remaining
upload: ./ssdlc_compliance_report.txt to s3://***/pymongo-auth-aws/1.4.0.dev1/ssdlc_compliance_report.txt