allow msgpack 1.1.0

tests with 1.1.0rc1 were successful, thus I assume 1.1.0 will also work ok.

setup.py

@@ -75,7 +75,7 @@ install_requires = [
     # Please note:
     # using any other msgpack version is not supported by borg development and
     # any feedback related to issues caused by this will be ignored.
-    'msgpack >=0.5.6, <=1.0.8, !=1.0.1',
+    'msgpack >=0.5.6, <=1.1.0, !=1.0.1',
     'packaging',
 ]
 

src/borg/helpers/msgpack.py

@@ -182,7 +182,7 @@ def is_slow_msgpack():
 def is_supported_msgpack():
     # DO NOT CHANGE OR REMOVE! See also requirements and comments in setup.py.
     import msgpack
-    return (0, 5, 6) <= msgpack.version <= (1, 0, 8) and \
+    return (0, 5, 6) <= msgpack.version <= (1, 1, 0) and \
            msgpack.version not in [(1, 0, 1), ]  # < add bad releases here to deny list