Replace removed cgi module and update SRA_IDS_TO_RUNINFO to Python 3.13.7

[Flobo2689x]

Closes #390

Description

• bin/sra_ids_to_runinfo.py: the charset is now read with self._response.headers.get_content_charset("utf-8") instead of cgi.parse_header(). cgi was removed in Python 3.13. get_content_charset() is available on all supported Python versions.
• SRA_IDS_TO_RUNINFO: conda environment and containers bumped from Python 3.9 to 3.13.7 (conda-forge::python=3.13.7, biocontainers/python:3.13.7, https://depot.galaxyproject.org/singularity/python:3.13.7).
• Module and pipeline snapshots updated. Only the SRA_IDS_TO_RUNINFO python version changes.

MULTIQC_MAPPINGS_CONFIG and SRA_RUNINFO_TO_FTP still pin Python 3.9.5. I left them out to keep this PR focused on the issue. I can bump them in a follow-up if you want.

Testing

• nf-test test modules/local/sra_ids_to_runinfo/tests/main.nf.test --profile +docker: 3/3 passed. The SRR13191702.runinfo.tsv md5 is unchanged; only the version entry differs.
• nf-test test workflows/tests/sra_skip_fastq_download.nf.test --profile +docker: passed.
• nf-core pipelines lint: 0 failed. The 5 warnings are all TODO strings or a missing subworkflow meta.yml, none of them related to this change.
• I ran the script directly against ENA/NCBI with SRR13191702, ERR1160846, DRR028935, GSM4907283 and GSE214215:
  • Python 3.9: the original script and the patched one produce the same output.
  • Python 3.13 and 3.14: the original fails with No module named 'cgi', the patched one gives the same output as on 3.9.

PR checklist

• This comment contains a description of changes (with reason).
• Make sure your code lints (nf-core pipelines lint).
• Ensure the test suite passes. I ran the module test and sra_skip_fastq_download, not the full suite.
• CHANGELOG.md is updated.