text: Title: Unit test fails under Python 3.13
  Body: In Fedora we have RobotFramework tests running for upcoming Fedora 41 using Python 3.13.03 in a side tag.
  While running the unit tests (version 7.0) I have a new failure in utils:
  ```
  FAIL: test_remove_entries_with_lambda_and_multiple_entries
  (test_error.TestRemoveRobotEntriesFromTraceback.test_remove_entries_with_lambda_and_multiple_entries)
  ----------------------------------------------------------------------
  ======================================================================
  FAIL: test_remove_entries_with_lambda_and_multiple_entries (test_error.TestRemoveRobotEntriesFromTraceback.test_remove_entries_with_lambda_and_multiple_entries)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 107, in test_remove_entries_with_lambda_and_multiple_entries
              self._verify_traceback(r'''
              ~~~~~~~~~~~~~~~~~~~~~~^^^^^
      Traceback \(most recent call last\):
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      ...<3 lines>...
          1/0
          ^^^
      '''.strip(), assert_raises, AssertionError, raising_lambda)
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 133, in _verify_traceback
      raise AssertionError('\nExpected:\n%s\n\nActual:\n%s' % (expected, tb))
  AssertionError: 
  Expected:
  Traceback \(most recent call last\):
    File ".*", line \d+, in <lambda.*>
      raising_lambda = lambda: raises\(\)
    File ".*", line \d+, in raises
      1/0
  
  Actual:
  Traceback (most recent call last):
    File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 106, in <lambda>
      raising_lambda = lambda: raises()
                               ~~~~~~^^
    File "/builddir/build/BUILD/robotframework-7.0/utest/utils/test_error.py", line 105, in raises
      1/0
      ~^~
  ZeroDivisionError: division by zero
  
  ----------------------------------------------------------------------
  Ran 635 tests in 0.577s
  
  FAILED (failures=1)
  
  ```
  
  Looking at the output and playing a bit around the solution to me looks like changing the test filter (line  in test_error.py) from:
  ```
          # Remove lines indicating error location with `^^^^` used by Python 3.11+.
          tb = '\n'.join(line for line in tb.splitlines() if line.strip('^ '))
  ```
  To:
  ```
          # Remove lines indicating error location with `^^^^` used by Python 3.11+ and `~~~~^` variants in Python 3.13+.
          tb = '\n'.join(line for line in tb.splitlines() if line.strip('^~ '))
  ```
  Which filters also the error indicators with `~` that seem to be new.
  
  This makes the test pass, I hope/believe without breaking in previous versions.
  
  If the proposal makes sense I can of course open a MR!
  
  Thanks!
  F.
  