[Python3] Replace deprecated assertEquals() to fix py3.12 compat

Replace the `assertEquals()` method calls in the Python3 test suite
with the modern `assertEqual()`.  The former was removed in Python 3.12,
and therefore is causing the tests to fail.  The latter is available
in all versions of Python 3.

Signed-off-by: Michał Górny <mgorny@gentoo.org>

runtime/Python3/tests/TestIntervalSet.py

@@ -34,7 +34,7 @@ def testDistinct1(self):
         s = IntervalSet()
         s.addRange(range(30,32))
         s.addRange(range(40,42))
-        self.assertEquals(2,len(s.intervals))
+        self.assertEqual(2,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
         self.assertFalse(35 in s)
@@ -43,7 +43,7 @@ def testDistinct2(self):
         s = IntervalSet()
         s.addRange(range(40,42))
         s.addRange(range(30,32))
-        self.assertEquals(2,len(s.intervals))
+        self.assertEqual(2,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
         self.assertFalse(35 in s)
@@ -52,7 +52,7 @@ def testContiguous1(self):
         s = IntervalSet()
         s.addRange(range(30,36))
         s.addRange(range(36,41))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
         self.assertTrue(35 in s)
@@ -61,23 +61,23 @@ def testContiguous2(self):
         s = IntervalSet()
         s.addRange(range(36,41))
         s.addRange(range(30,36))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
 
     def testOverlapping1(self):
         s = IntervalSet()
         s.addRange(range(30,40))
         s.addRange(range(35,45))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(44 in s)
 
     def testOverlapping2(self):
         s = IntervalSet()
         s.addRange(range(35,45))
         s.addRange(range(30,40))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(44 in s)
 
@@ -87,7 +87,7 @@ def testOverlapping3(self):
         s.addRange(range(40,42))
         s.addRange(range(50,52))
         s.addRange(range(20,61))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(20 in s)
         self.assertTrue(60 in s)