gnu: python-icalendar: Update to 4.0.7.

* gnu/packages/python-xyz.scm (python-icalendar): Update to 4.0.7.

gnu/packages/python-xyz.scm

@@ -11060,13 +11060,13 @@ (define-public python2-execnet
 (define-public python-icalendar
   (package
     (name "python-icalendar")
-    (version "4.0.5")
+    (version "4.0.7")
     (source (origin
              (method url-fetch)
              (uri (pypi-uri "icalendar" version))
              (sha256
               (base32
-               "14ynjj65kfmlcvpb7k097w789wvxncd3cr3xz5m1jz9yl9v6vv5q"))))
+               "19574j3jwssm2dkqykih4568xqfgjsa3hcd79yl5s2vfys3qvh8g"))))
     (build-system python-build-system)
     (propagated-inputs
      `(("python-dateutil" ,python-dateutil)