Bump tested-up-to.

Author: dd32

readme.txt

@@ -1,7 +1,7 @@
 === Debug Bar ===
 Contributors: wordpressdotorg, ryan, westi, koopersmith, duck_, mitchoyoshitaka, dd32, jrf, obenland, nacin, evansolomon, Otto42, aidvu, josephscott, eoigal
 Tags: debug
-Tested up to: 6.5
+Tested up to: 6.9
 Stable tag: 1.1.7
 Requires at least: 3.4