[Java] Replace deprecated add-path function with environment files.

Author: vyazelenko

.github/workflows/ci.yml

@@ -116,7 +116,7 @@ jobs:
 
  curl -O -L https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-Linux-x86_64.tar.gz
  tar xf cmake-${CMAKE_VERSION}-Linux-x86_64.tar.gz
- echo "::add-path::cmake-${CMAKE_VERSION}-Linux-x86_64/bin"
+ echo "cmake-${CMAKE_VERSION}-Linux-x86_64/bin" >> $GITHUB_PATH
  - name: Build
  run: cmake --version && ./cppbuild/cppbuild
 
@@ -155,7 +155,7 @@ jobs:
 
  curl -O -L https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-Linux-x86_64.tar.gz
  tar xf cmake-${CMAKE_VERSION}-Linux-x86_64.tar.gz
- echo "::add-path::cmake-${CMAKE_VERSION}-Linux-x86_64/bin"
+ echo "cmake-${CMAKE_VERSION}-Linux-x86_64/bin" >> $GITHUB_PATH
  - name: Build
  run: cmake --version && ./cppbuild/cppbuild
 
@@ -174,7 +174,7 @@ jobs:
  run: |
  curl -O -L https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-Darwin-x86_64.tar.gz
  tar xf cmake-${CMAKE_VERSION}-Darwin-x86_64.tar.gz
- echo "::add-path::cmake-${CMAKE_VERSION}-Darwin-x86_64/CMake.app/Contents/bin"
+ echo "cmake-${CMAKE_VERSION}-Darwin-x86_64/CMake.app/Contents/bin" >> $GITHUB_PATH
  - name: Build
  run: cmake --version && ./cppbuild/cppbuild
 
@@ -194,6 +194,6 @@ jobs:
  $client = new-object System.Net.WebClient
  $client.DownloadFile("https://github.com/Kitware/CMake/releases/download/v$Env:CMAKE_VERSION/cmake-$Env:CMAKE_VERSION-win64-x64.zip","cmake-$Env:CMAKE_VERSION-win64-x64.zip")
  7z x cmake-$Env:CMAKE_VERSION-win64-x64.zip
- echo "::add-path::cmake-$Env:CMAKE_VERSION-win64-x64/bin"
+ echo "cmake-$Env:CMAKE_VERSION-win64-x64/bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8
  - name: Build
  run: cppbuild/cppbuild.cmd