Update together requirement from <1.3,>=1.2.11 to >=1.2.11,<1.4

Updates the requirements on [together](https://github.com/togethercomputer/together-python) to permit the latest version.
- [Release notes](https://github.com/togethercomputer/together-python/releases)
- [Commits](togethercomputer/together-python@v1.2.11...v1.3.5)

---
updated-dependencies:
- dependency-name: together
  dependency-type: direct:production
...

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

pyproject.toml

@@ -58,7 +58,7 @@ mesop = [
 
 autogen = [
     "autogen[anthropic,together]>=0.3.0,<0.4",
-    "together>=1.2.11,<1.3", # ToDo: together 1.3.0 has issues with our dev dependencies
+    "together>=1.2.11,<1.4", # ToDo: together 1.3.0 has issues with our dev dependencies
     "markdownify==0.13.1", # Needed by autogen.WebSurferAgent but not included
 ]