Use double quotes

Author: vmoroz

.ado/build-template.yml

@@ -189,7 +189,7 @@ extends:
               BEACHBALL_BRANCH: $(BeachBallBranchName)
 
           # 6. Bump versions via prepare-release (Developer builds only)
-          - pwsh: npx prepare-release --bump-only --branch $env:BEACHBALL_BRANCH --no-color
+          - pwsh: npx prepare-release --bump-only --branch "$env:BEACHBALL_BRANCH" --no-color
             displayName: Bump versions (prepare-release --bump-only)
             condition: and(succeeded(), eq(variables['detectScenario.isReleaseBuild'], 'False'))
             env:

.ado/prepare-release-bot.yml

@@ -75,7 +75,7 @@ jobs:
           env:
             SOURCE_BRANCH_NAME: $(Build.SourceBranchName)
 
-      - pwsh: npx prepare-release --branch $env:TARGET_BRANCH --no-color
+      - pwsh: npx prepare-release --branch "$env:TARGET_BRANCH" --no-color
         displayName: Prepare Release
         env:
           GH_TOKEN: $(GitHubOAuthToken)

.ado/release.yml

@@ -272,7 +272,7 @@ extends:
         steps:
         - task: NuGetToolInstaller@1
           displayName: 'Use NuGet'
-        - pwsh: nuget.exe SetApiKey $env:NUGET_API_KEY
+        - pwsh: nuget.exe SetApiKey "$env:NUGET_API_KEY"
           displayName: NuGet SetApiKey (nuget.org)
           workingDirectory: $(Pipeline.Workspace)/ReactWindows-final-nuget
           env: