[lldb-dap][test] Fix: Typo in unresolved test (llvm#107030)

There is a typo in an assertion that causes the instruction break-point
test to be unresolved

(cherry picked from commit 7d7d2d2)

Author: da-viper

lldb/test/API/tools/lldb-dap/instruction-breakpoint/TestDAP_instruction_breakpoint.py

@@ -35,7 +35,7 @@ def instruction_breakpoint_test(self):
         # Set source breakpoint 1
         response = self.dap_server.request_setBreakpoints(self.main_path, [main_line])
         breakpoints = response["body"]["breakpoints"]
-        self.assertEquals(len(breakpoints), 1)
+        self.assertEqual(len(breakpoints), 1)
         breakpoint = breakpoints[0]
         self.assertEqual(
             breakpoint["line"], main_line, "incorrect breakpoint source line"