patch 8.2.1964: not all ConTeXt files are recognized

Problem:    Not all ConTeXt files are recognized.
Solution:   Add two patterns. (closes #7263)
diff --git a/src/version.c b/src/version.c
index 3ff4586..19f5ba2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1964,
+/**/
     1963,
 /**/
     1962,