patch 8.2.2971: cannot yank a block without trailing spaces

Problem:    Cannot yank a block without trailing spaces.
Solution:   Add the "zy" command. (Christian Brabandt, closes #8292)
diff --git a/src/normal.c b/src/normal.c
index fe47e2b..b2d0c01 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -2985,6 +2985,9 @@
     case 'P':
     case 'p':  nv_put(cap);
 	       break;
+		// "zy" Yank without trailing spaces
+    case 'y':  nv_operator(cap);
+	       break;
 #ifdef FEAT_FOLDING
 		// "zF": create fold command
 		// "zf": create fold operator