Bump boto3 from 1.38.4 to 1.38.6

Bumps [boto3](https://github.com/boto/boto3) from 1.38.4 to 1.38.6.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.38.4...1.38.6)

---
updated-dependencies:
- dependency-name: boto3
  dependency-version: 1.38.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 azure-storage-blob==12.20.0
-boto3==1.38.4
+boto3==1.38.6
 celery==5.3.6
 d3net-spleeterweb==0.1.3
 demucs==4.0.1