Issue #26621: Update libmpdec version and remove unnecessary test case.

Lib/_pydecimal.py

@@ -148,7 +148,7 @@ __xname__ = __name__    # sys.modules lookup (--without-threads)
 __name__ = 'decimal'    # For pickling
 __version__ = '1.70'    # Highest version of the spec this complies with
                         # See http://speleotrove.com/decimal/
-__libmpdec_version__ = "2.4.1" # compatible libmpdec version
+__libmpdec_version__ = "2.4.2" # compatible libmpdec version
 
 import math as _math
 import numbers as _numbers

Lib/test/test_decimal.py

@@ -4206,7 +4206,6 @@ class CheckAttributes(unittest.TestCase):
         self.assertTrue(P.HAVE_THREADS is True or P.HAVE_THREADS is False)
 
         self.assertEqual(C.__version__, P.__version__)
-        self.assertEqual(C.__libmpdec_version__, P.__libmpdec_version__)
 
         self.assertEqual(dir(C), dir(P))
 

Modules/_decimal/libmpdec/mpdecimal.h

@@ -108,9 +108,9 @@ MPD_PRAGMA(MPD_HIDE_SYMBOLS_START)
 
 #define MPD_MAJOR_VERSION 2
 #define MPD_MINOR_VERSION 4
-#define MPD_MICRO_VERSION 1
+#define MPD_MICRO_VERSION 2
 
-#define MPD_VERSION "2.4.1"
+#define MPD_VERSION "2.4.2"
 
 #define MPD_VERSION_HEX ((MPD_MAJOR_VERSION << 24) | \
                          (MPD_MINOR_VERSION << 16) | \