build: bump msal

Bumps the backend-deps group in /infra/scripts/fabric_scripts with 1 update: [msal](https://github.com/AzureAD/microsoft-authentication-library-for-python).


Updates `msal` from 1.33.0 to 1.34.0
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-python/releases)
- [Changelog](https://github.com/AzureAD/microsoft-authentication-library-for-python/blob/dev/RELEASES.md)
- [Commits](AzureAD/microsoft-authentication-library-for-python@1.33.0...1.34.0)

---
updated-dependencies:
- dependency-name: msal
  dependency-version: 1.34.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: backend-deps
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

infra/scripts/fabric_scripts/requirements.txt

@@ -1,4 +1,4 @@
-msal==1.33.0
+msal==1.34.0
 azure-identity
 pandas
 azure-storage-file-datalake