patch 8.2.2156: Github actions run on pusing a tag

Problem:    Github actions run on pusing a tag.
Solution:   Don't run CI on tag push. Omit coveralls on pull-request.
            (Ozaki Kiichi, closes #7489)
diff --git a/src/version.c b/src/version.c
index 7a76d06..be2b33c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2156,
+/**/
     2155,
 /**/
     2154,