Remove netbsd and dragonflybsd from test matrix due to protobuf dropping old gcc

Author: ntkme

.github/workflows/build.yml

@@ -126,16 +126,6 @@ jobs:
               run: |
                 pkg_add node protobuf ruby%3.3 ruby-shims
                 echo 3.3 | tee /etc/ruby-version
-          - os: ubuntu-latest
-            vm:
-              os: netbsd
-              run: |
-                /usr/sbin/pkg_add nodejs protobuf ruby
-          - os: ubuntu-latest
-            vm:
-              os: dragonflybsd
-              run: |
-                pkg install -y libnghttp2 libuv node npm protobuf ruby rubygem-bundler rubygem-rake
           - os: ubuntu-latest
             vm:
               os: omnios