patch 9.2.0542: tests: test_codestyle fails

Problem:  tests: test_codestyle fails
          (after v9.2.0541)
Solution: Replace tabs by spaces

related: #20253

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_vim9_class.vim

@@ -54,7 +54,7 @@ def Test_class_basic()
   lines =<< trim END
     vim9script
     class Something
-    : 	endcla
+    :   endcla
   END
   v9.CheckSourceFailure(lines, 'E1065: Command cannot be shortened: endcla', 3)
 
@@ -11880,14 +11880,14 @@ endfunc
 " Test for colon and whitespace before class, endclass, static, and abstract
 def Test_colon_whitespace()
   var lines =<< trim END
-    : 	vim9script
-    : 	class C
+    :   vim9script
+    :   class C
        # TODO: Fix :public - gives E1065
-       # : 	public var p = true
-       : 	static var s = true
-    : 	endclass
-    : 	abstract class A
-    : 	endclass
+       # :      public var p = true
+       :        static var s = true
+    :   endclass
+    :   abstract class A
+    :   endclass
   END
   v9.CheckSourceSuccess(lines)
 enddef

src/testdir/test_vim9_interface.vim

@@ -90,7 +90,7 @@ def Test_interface_basics()
   lines =<< trim END
     vim9script
     interface Short
-    : 	endint
+    :   endint
   END
   v9.CheckSourceFailure(lines, 'E1065: Command cannot be shortened: endint', 3)
 

src/version.c

@@ -729,6 +729,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    542,
 /**/
     541,
 /**/