Openfst update

conda/openfst/meta.yaml

 {% set name = "openfst" %}
-{% set version = "1.6.1" %}
-{% set sha256 = "c623a39394158cc5abd2e54c6dd7934b07394440" %}
+{% set version = "1.6.7" %}
+{% set sha1 = "b6c2771c8deee6879a2c98a0c975b078f59c7dd7" %}
 
 package:
   name: {{ name }}
@@ -9,10 +9,10 @@ package:
 source:
   fn: {{ name }}-{{ version }}.tar.gz
   url: http://www.openfst.org/twiki/pub/FST/FstDownload/openfst-{{ version }}.tar.gz
-  sha1: {{ sha256 }}
+  sha1: {{ sha1 }}
 
 build:
-  number: 2
+  number: 0
   skip: true  # [not linux]
   run_exports:
     # https://abi-laboratory.pro/tracker/timeline/openfst/