update CREDITS and CHANGELOG for the 2020.07-1 hotfix release

CHANGELOG

@@ -1,3 +1,7 @@
+Version 2020.07-1 (2020-09-08)
+  Friendica Core
+    Fixed a problem that leakted sensitive information [Roger Meyer, MrPetovan]
+
 Version 2020.07 (2020-07-12)
   Friendica Core:
     Update to the translations: DE, EN GB, EN US, FR, ET, NL, PL, RU, ZH-CN [translation teams]

CREDITS.txt

@@ -212,6 +212,7 @@ repat
 Ricardo Pereira
 Rik 4
 RJ Madsen
+Roger Meyer
 Roland Häder
 Rui Andrada
 rwa