Prep for new release

Signed-off-by: Jono Yang <[email protected]>

Author: JonoYang

CHANGELOG.rst

@@ -1,7 +1,7 @@
 Release notes
 =============
 
-Version 31.1.0 - (2024-05-XX)
+Version 31.1.0 - (2024-05-15)
 ------------------------------
 
 - Add ``on_macos_arm64`` and ``on_ubuntu_22`` markers to ``commoncode.system``.

src/commoncode/system.py

@@ -86,18 +86,18 @@ def is_on_macos_arm64():
 
 def get_etc_os_release_info(os_release_path='/etc/os-release'):
     """
-    Return a dictionary of keys-value pairs from /etc/os-release
+    Return a dictionary of key-value pairs from /etc/os-release
     """
-    cfg_kv = {}
+    os_release_data = {}
     with open(os_release_path) as f:
         for line in f:
             split_line = line.split('=')
             if not split_line:
                 continue
             k = split_line[0].strip()
             v = split_line[-1].strip()
-            cfg_kv[k] = v
-    return cfg_kv
+            os_release_data[k] = v
+    return os_release_data
 
 
 def is_on_ubuntu_22():