community/wireshark: fix secfixes comment

We moved to 2.4 after 2.2.8. Adjust secfixes comment accordingly. Fixes
commit e8d61b9a (community/wireshark: security upgrade to 2.6.20).

community/wireshark/APKBUILD

@@ -164,11 +164,11 @@ source="https://www.wireshark.org/download/src/wireshark-$pkgver.tar.xz
 #     - CVE-2017-17083
 #     - CVE-2017-17084
 #     - CVE-2017-17085
-#   2.2.10-r0:
+#   2.4.2-r0:
 #     - CVE-2017-15191
 #     - CVE-2017-15192
 #     - CVE-2017-15193
-#   2.2.9-r0:
+#   2.4.1-r0:
 #     - CVE-2017-13765
 #     - CVE-2017-13766
 #     - CVE-2017-13767