allow msgpack 1.0.4, fixes #6716

setup.cfg

@@ -38,7 +38,7 @@ python_requires = >=3.9
 setup_requires =
    setuptools_scm[toml] >= 6.2
 install_requires =
-  msgpack >=1.0.3, <=1.0.3
+  msgpack >=1.0.3, <=1.0.4
   packaging
   argon2-cffi
 tests_require =

src/borg/helpers/msgpack.py

@@ -142,7 +142,7 @@ def is_slow_msgpack():
 def is_supported_msgpack():
     # DO NOT CHANGE OR REMOVE! See also requirements and comments in setup.py.
     import msgpack
-    return (1, 0, 3) <= msgpack.version <= (1, 0, 3) and \
+    return (1, 0, 3) <= msgpack.version <= (1, 0, 4) and \
            msgpack.version not in []  # < add bad releases here to deny list