Bump apache-beam from 2.70.0 to 2.71.0 (#55)

Bumps [apache-beam](https://github.com/apache/beam) from 2.70.0 to 2.71.0.
- [Release notes](https://github.com/apache/beam/releases)
- [Changelog](https://github.com/apache/beam/blob/master/CHANGES.md)
- [Commits](https://github.com/apache/beam/compare/v2.70.0...v2.71.0)

---
updated-dependencies:
- dependency-name: apache-beam
  dependency-version: 2.71.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/requirements.txt b/requirements.txt
index ffce5a5..61f6997 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-apache-beam==2.70.0
+apache-beam==2.71.0