Use Chocolatey to install bzip2.dll for Windows tests in CI.

Author: hainesr

.github/workflows/tests.yml

@@ -30,8 +30,10 @@ jobs:
     - name: Install bzip2 library
       if: matrix.os == 'windows'
       run: |
-        wget https://github.com/philr/bzip2-windows/releases/download/v1.0.8.0/bzip2-dll-1.0.8.0-win-x64.zip
-        Expand-Archive -Path bzip2-dll-1.0.8.0-win-x64.zip -DestinationPath C:\hostedtoolcache\windows\Ruby\${{ matrix.ruby }}\x64\bin
+        choco install bzip2
+        dir C:\ProgramData\chocolatey\lib\bzip2\tools
+        Copy-Item "C:\ProgramData\chocolatey\lib\bzip2\tools\bzip2.dll" -Destination "C:\ProgramData\Chocolatey\bin"
+        dir C:\ProgramData\Chocolatey
 
     - name: Run the tests
       env:

lib/zip/bzip2/ffi/libbz2.rb

@@ -37,7 +37,7 @@ module FFI
       module Libbz2 # :nodoc:
         extend ::FFI::Library
 
-        ffi_lib ['bz2', 'libbz2.so.1', 'libbz2.dll']
+        ffi_lib ['bz2', 'libbz2.so.1', 'libbz2.dll', 'bzip2.dll']
 
         BZ_RUN    = 0
         BZ_FLUSH  = 1