fix: bump deltalake from 0.25.5 to 1.2.1

Bumps [deltalake](https://github.com/delta-io/delta-rs) from 0.25.5 to 1.2.1.
- [Release notes](https://github.com/delta-io/delta-rs/releases)
- [Changelog](https://github.com/delta-io/delta-rs/blob/main/CHANGELOG.md)
- [Commits](delta-io/delta-rs@python-v0.25.5...python-v1.2.1)

---
updated-dependencies:
- dependency-name: deltalake
  dependency-version: 1.2.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -5,5 +5,5 @@ simplejson==3.20.2
 flask==3.1.2
 pyyaml==6.0.3
 pyiceberg[sql-sqlite,pyarrow]==0.10.0
-deltalake==0.25.5
+deltalake==1.2.1
 azure-servicebus==7.14.3