erlang-rebar: bump to version 2.6.4

Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/erlang-rebar/erlang-rebar.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 aed933d4e60c4f11e0771ccdb4434cccdb9a71cf8b1363d17aaf863988b3ff60 erlang-rebar-2.6.1.tar.gz
+sha256 577246bafa2eb2b2c3f1d0c157408650446884555bf87901508ce71d5cc0bd07 erlang-rebar-2.6.4.tar.gz

package/erlang-rebar/erlang-rebar.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-ERLANG_REBAR_VERSION = 2.6.1
+ERLANG_REBAR_VERSION = 2.6.4
 
 # Upstream publishes a release, but we can not use it as it is a release of
 # a generated rebar script, when we want the sources. So we have to use the