patch 8.2.0062: memory test is flaky on FreeBSD

Problem:    Memory test is flaky on FreeBSD.
Solution:   Add a short sleep before getting the first size.

src/testdir/test_memory_usage.vim

@@ -133,6 +133,8 @@ func Test_memory_func_capture_lvars()
 
   let vim = s:vim_new()
   call vim.start('--clean', '-c', 'set noswapfile', testfile)
+  " Wait a bit until the process has started and sourced the script.
+  sleep 200m
   let before = s:monitor_memory_usage(vim.pid).last
 
   call term_sendkeys(vim.buf, ":so %\<CR>")

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    62,
 /**/
     61,
 /**/