[dependency]: Bump symbol-sdk-python

Bumps the tools-vanity-dependencies group in /tools/vanity with 1 update: [symbol-sdk-python](https://github.com/symbol/symbol).


Updates `symbol-sdk-python` from 3.2.2 to 3.2.3
- [Release notes](https://github.com/symbol/symbol/releases)
- [Commits](symbol/symbol@sdk/python/v3.2.2...sdk/python/v3.2.3)

---
updated-dependencies:
- dependency-name: symbol-sdk-python
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: tools-vanity-dependencies
...

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

tools/vanity/requirements.txt

@@ -1 +1 @@
-symbol-sdk-python==3.2.2
+symbol-sdk-python==3.2.3