chore: bump version to 1.2.2

Manual version bump to unblock develop after partially-failed v1.2.1 publish. The publish workflow failed at PyPI publish (SBOM regression) and never created the automated bump PR.

Co-Authored-By: wphillipmoore-claude <255925739+wphillipmoore-claude@users.noreply.github.com>

Author: wphillipmoore

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pymqrest"
-version = "1.2.1"
+version = "1.2.2"
 description = "Python wrapper for the IBM MQ REST API"
 readme = "README.md"
 license = "GPL-3.0-or-later"