Rule `variable_011` does not enforce on procedure calls

[JHertz5]

Environment v3.27.0

Describe the bug The rule variable_011 enforces consistent case for variables. However, this does not work on cases where a variable is used in a procedure call.

To Reproduce Steps to reproduce the behavior:

1. Create a file called test.vhd with the following contents:

   
   ARCHITECTURE RTL OF TEST IS
   
   PROCEDURE MY_PROC (
   SIGNAL PARAM1   : INTEGER;
   VARIABLE PARAM2 : INTEGER
   ) IS
   BEGIN
   
   END PROCEDURE MY_PROC;
   
   SIGNAL SIG1 : INTEGER;

BEGIN

PROCESS1 : PROCESS IS

VARIABLE VAR1 : INTEGER;

BEGIN

MY_PROC(
        PARAM1 => SIG1,
        PARAM2 => VAR1
      );

END PROCESS PROCESS1;

END ARCHITECTURE RTL;

2. Run `vsg -f test.vhd --fix`
3. Read test.vhd again
```vhdl
architecture rtl of test is

  procedure my_proc (
    signal param1   : integer;
    variable param2 : integer
  ) is
  begin

  end procedure my_proc;

  signal sig1 : integer;

begin

  process1 : process is

    variable var1 : integer;

  begin

    my_proc(
            param1 => sig1,
            param2 => VAR1
          );

  end process process1;

end architecture rtl;

All of the code other than the variable name in the procedure call has been corrected to lowercase.

Expected behavior I expect this rule to act on variable names in procedure calls.

[JHertz5]

I've created a PR, #1336, to address this issue.