license: lgpl 3.0 or later with spdx

Signed-off-by: vsoch <vsoch@users.noreply.github.com>

Author: vsoch

pyproject.toml

@@ -21,7 +21,7 @@ keywords = ["flux", "job manager", "workload manager", "orchestration", "hpc"]
 classifiers = [
     "Intended Audience :: Science/Research",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)",
+    "License :: OSI Approved :: GNU Lesser General Public License v3.0 or later (LGPL-3.0-or-later)",
     "Programming Language :: C++",
     "Programming Language :: Python",
     "Topic :: Software Development",