[Internal] [Bug] "DataFrame columns are not unique" in BioSample

[jessicarowell]

tostadas/bin/submission_new.py:380: UserWarning: DataFrame columns are not unique, some columns will be omitted.
return self.metadata_df[available_columns].to_dict(orient='records')[0] if available_columns else {}
Submission requested for genbank,biosample,sra

Probably just need to add a check for duplicates, but also make sure template doesn't have duplicates. If dupe cols, check if values are same and if not, exit with error.

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• [] 1 - Most severe (a full-break in core function)
• [] 2-4 - Moderate (break for a particular aspect/feature) (how integral is the broken feature?)
• 5 - Least severe (non-functional issue, such as inconsitency / error in documentation or administrative in nature) 

Please Complete the Following Information:

• OS: [e.g. iOS]:
• Browser [e.g. chrome, safari]:
• Version [e.g. 22]:
• Run environment (container, cloud service, HPC, platform, etc.):

nextflow run main.nf -profile test,singularity --species rsv --annotation false --submission true --output_dir test_rsv --submission_config /scicomp/home-pure/ick4/02.scratch/submission_config.yaml --meta_path ~/02.scratch/custom_test_metadata.xlsx --custom_fields_file ~/02.scratch/metadata_custom_fields.json

Any Additional Context or Information? Has There Been Any Progress Made So Far Towards this Request? Any Concrete Instructions to Resolve the Bug or Helpful Resources to Reference? Screenshots or Logs?