[tune](deps): Bump s3transfer from 0.3.4 to 0.3.7 in /python/requirements

[dependabot[bot]]

Bumps s3transfer from 0.3.4 to 0.3.7.

Changelog

Sourced from s3transfer's changelog.

0.3.7

• bugfix:ReadFileChunk: Fix seek behavior in ReadFileChunk class

0.3.6

• bugfix:packaging: Fix setup.py metadata for futures on Python 2.7

0.3.5

• enhancement:s3: Block TransferManager methods for S3 Object Lambda resources

Commits

• 8498ce2 Merge branch 'release-0.3.7'
• d0f0ebd Bumping version to 0.3.7
• f840c05 Merge pull request #102 from dbnicholson/fix-zero-len-files
• fe4f945 Fix seek bounding issues
• eecc400 Test ReadFileChunk seek with whence != 0
• d9eb4e6 Implement seek whence param for zero length files
• ec75ec0 Fix trove classifiers for s3transfer
• fb386e4 Merge branch 'release-0.3.6'
• 78c24f8 Merge branch 'release-0.3.6' into develop
• 60ee43e Bumping version to 0.3.6
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #38.