hiawatha: bump to version 9.1

Bump to version 9.1 which includes mitigations against BEAST and the RC4
vuln.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/hiawatha/hiawatha.mk

@@ -1,4 +1,4 @@
-HIAWATHA_VERSION = 9.0
+HIAWATHA_VERSION = 9.1
 HIAWATHA_SITE = http://www.hiawatha-webserver.org/files
 HIAWATHA_LICENSE = GPLv2
 HIAWATHA_LICENSE_FILES = LICENSE