Small fixes

Author: gansm

.github/workflows/freebsd.yml

@@ -24,7 +24,6 @@ jobs:
       with:
         operating_system: freebsd
         version: '15.0'
-        shell: bash
         run: |
           uname -a
           freebsd-version

.github/workflows/netbsd.yml

@@ -24,7 +24,6 @@ jobs:
       with:
         operating_system: netbsd
         version: '10.1'
-        shell: bash
         run: |
           uname -a
           whoami

.github/workflows/openbsd.yml

@@ -24,13 +24,12 @@ jobs:
       with:
         operating_system: openbsd
         version: '7.9'
-        shell: bash
         run: |
           uname -a
           whoami
           pwd
           # http://ftp.openbsd.org/pub/OpenBSD/7.9/packages/amd64/
-          sudo pkg_add gcc g++ automake autoconf autoconf-archive libtool cppunit
+          sudo pkg_add gcc g++ automake-1.18.1 autoconf-2.72p0 autoconf-archive libtool cppunit
           export CXX=eg++
           export AUTOCONF_VERSION=2.72
           export AUTOMAKE_VERSION=1.18