putobjectsink: Tests fail on MR branches but not main

0:00:01.012779006 32949 0x7fe650009470 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:686:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::render:<sink> Upload failed: Error None (Some("Failed to upload part: dispatch failure")) at net/aws/src/s3sink/putobjectsink.rs:203
0:00:01.012804034 32949 0x7fe64c00b580 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:686:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::render:<sink> Upload failed: Error None (Some("Failed to upload part: dispatch failure")) at net/aws/src/s3sink/putobjectsink.rs:203
0:00:01.012813412 32949 0x7fe65800a200 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:686:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::render:<sink> Upload failed: Error None (Some("Failed to upload part: dispatch failure")) at net/aws/src/s3sink/putobjectsink.rs:203
0:00:01.012782102 32949 0x7fe64c00a640 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:632:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::stop:<sink> Failed to finalize the upload: Some(ErrorMessage { error_domain: gst-resource-error-quark, error_code: 6, message: None, debug: Some("Failed to upload part: dispatch failure"), filename: "net/aws/src/s3sink/putobjectsink.rs", function: "gstaws::s3sink::putobjectsink::S3PutObjectSink::flush_buffer::{{closure}}", line: 203 })
0:00:01.012834101 32949 0x7fe65c0092d0 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:715:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::event:<sink> Failed to finalize the upload: Some(ErrorMessage { error_domain: gst-resource-error-quark, error_code: 6, message: None, debug: Some("Failed to upload part: dispatch failure"), filename: "net/aws/src/s3sink/putobjectsink.rs", function: "gstaws::s3sink::putobjectsink::S3PutObjectSink::flush_buffer::{{closure}}", line: 203 })
0:00:01.012780709 32949 0x7fe664009730 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:686:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::render:<sink> Upload failed: Error None (Some("Failed to upload part: dispatch failure")) at net/aws/src/s3sink/putobjectsink.rs:203
0:00:01.012782102 32949 0x7fe64800aaf0 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:686:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::render:<sink> Upload failed: Error None (Some("Failed to upload part: dispatch failure")) at net/aws/src/s3sink/putobjectsink.rs:203
0:00:01.012781170 32949 0x7fe660009300 ERROR     awss3putobjectsink net/aws/src/s3sink/putobjectsink.rs:686:<gstaws::s3sink::putobjectsink::S3PutObjectSink as gstreamer_base::subclass::base_sink::BaseSinkImpl>::render:<sink> Upload failed: Error None (Some("Failed to upload part: dispatch failure")) at net/aws/src/s3sink/putobjectsink.rs:203

CC @arun