[cherry-pick] Revert to restic 0.13.1 (#126) (#127)

/cherry-pick

Signed-off-by: Tamal Saha <tamal@appscode.com>

Signed-off-by: Tamal Saha <tamal@appscode.com>

Signed-off-by: Tamal Saha <tamal@appscode.com>
Co-authored-by: Tamal Saha <tamal@appscode.com>

Author: 1gtm

Makefile

@@ -42,7 +42,7 @@ else
 	endif
 endif
 
-RESTIC_VER       := 0.14.0
+RESTIC_VER       := 0.13.1
 REDIS_DUMP_VER   := 0.7.2-ac
 
 ###