Import pa_version_under5p0 in compat submodule

Author: judahrand

pandas/compat/__init__.py

@@ -24,6 +24,7 @@
     pa_version_under2p0,
     pa_version_under3p0,
     pa_version_under4p0,
+    pa_version_under5p0
 )
 
 PY39 = sys.version_info >= (3, 9)
@@ -155,4 +156,5 @@ def get_lzma_file(lzma):
     "pa_version_under2p0",
     "pa_version_under3p0",
     "pa_version_under4p0",
+    "pa_version_under5p0"
 ]