fix set-env refs

.github/scripts/load-version.ps1

@@ -2,4 +2,4 @@
 $packageVersion = (Get-Content -Raw -Path $rootPath\src\package.json | ConvertFrom-Json).version;
 
 Write-Output "Setting package version to $packageVersion";
-Write-Output "::set-env name=PACKAGE_VERSION::$packageVersion";
+Write-Output "PACKAGE_VERSION=$packageVersion" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append;

.github/scripts/macos/increment-version.ps1

@@ -2,7 +2,7 @@
 $packagePath = "$rootPath\package.json";
 $buildNumber = 100 + [int]$env:GITHUB_RUN_NUMBER;
 Write-Output "Setting build number to $buildNumber";
-Write-Output "::set-env name=BUILD_NUMBER::$buildNumber";
+Write-Output "BUILD_NUMBER=$buildNumber" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append;
 $package = Get-Content -Raw -Path $packagePath | ConvertFrom-Json;
 $package.build | Add-Member -MemberType NoteProperty -Name buildVersion -Value "$buildNumber";
 $package | ConvertTo-Json -Depth 32 | Set-Content $packagePath;

.github/workflows/build.yml

@@ -36,7 +36,7 @@ jobs:
           node-version: '10.x'
 
       - name: Set Node options
-        run: echo "::set-env name=NODE_OPTIONS::--max_old_space_size=4096"
+        run: echo "NODE_OPTIONS=--max_old_space_size=4096" >> $GITHUB_ENV
 
       - name: Set up environment
         run: |
@@ -126,7 +126,8 @@ jobs:
           node-version: '10.x'
 
       - name: Set Node options
-        run: echo "::set-env name=NODE_OPTIONS::--max_old_space_size=4096"
+        run: echo "NODE_OPTIONS=--max_old_space_size=4096" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        shell: pwsh
 
       - name: Set up environment
         if: github.event_name == 'release'
@@ -232,7 +233,7 @@ jobs:
           node-version: '10.x'
 
       - name: Set Node options
-        run: echo "::set-env name=NODE_OPTIONS::--max_old_space_size=4096"
+        run: echo "NODE_OPTIONS=--max_old_space_size=4096" >> $GITHUB_ENV
 
       - name: Print environment
         run: |