Set upper bound for pyzmq to avoid bug

Version 26.1.1 of `pyzmq` manually sets the LDFLAGS environment variable
during the `libzmq` installation process, causing installation failures
on some systems. To prevent these issues, we set the upper bound for
`pyzmq` to 26.1.0 until `pyzmq` developers resolve the bug.

Ref: zeromq/pyzmq#2014

compute_endpoint/setup.py

@@ -6,7 +6,7 @@
 REQUIRES = [
     "requests>=2.31.0,<3",
     "globus-sdk",  # version will be bounded by `globus-compute-sdk`
-    "globus-compute-sdk==2.27.0",
+    "globus-compute-sdk==2.27.1",
     "globus-compute-common==0.4.1",
     "globus-identity-mapping==0.3.0",
     # table printing used in list-endpoints
@@ -31,7 +31,7 @@
     # building from source, which may mean there's an issue in the packaged library
     # further investigation may be needed if the issue persists in the next pyzmq
     # release
-    "pyzmq>=22.0.0,!=22.3.0,<27.0.0",
+    "pyzmq>=22.0.0,!=22.3.0,<=26.1.0",
     # 'parsl' is a core requirement of the globus-compute-endpoint, essential to a range
     # of different features and functions
     # pin exact versions because it does not use semver