[bob-devel] update no pin list

conda/beat-devel/meta.yaml

 # The original copy of this list is in bob-devel recipe. Keep them synced please.
-{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libcxx', 'libcxxabi'] %}
+{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libgfortran-ng', 'libcxx', 'libcxxabi', 'libgfortran'] %}
 package:
   name: beat-devel
   version: 2021.08.31

conda/bob-devel/meta.yaml

 # A copy of this list is in beat-devel and bob/bob as well. Keep them synced please.
-{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libcxx', 'libcxxabi'] %}
+{% set nopin = ['ca-certificates', 'certifi', 'openssl', 'libstdcxx-ng', 'libgcc-ng', 'libgfortran-ng', 'libcxx', 'libcxxabi', 'libgfortran'] %}
 package:
   name: bob-devel
   # please update the version of beat-devel and update bob-devel's version