quote variables

Author: Steve Lee (POWERSHELL HE/HIM) (from Dev Box)

.pipelines/DSC-Official.yml

@@ -117,8 +117,8 @@ extends:
             buildName: x86_64-pc-windows-msvc
             signSrcPath: '$(signSrcPath)'
             PackageRoot: '$(PackageRoot)'
-            token: $(AzToken)
-            rustSDK: $(Rust.SDK)
+            token: '$(AzToken)'
+            rustSDK: '$(Rust.SDK)'
 
       - job: BuildWin_arm64
         dependsOn: SetPackageVersion
@@ -137,8 +137,8 @@ extends:
             buildName: aarch64-pc-windows-msvc
             signSrcPath: '$(signSrcPath)'
             PackageRoot: '$(PackageRoot)'
-            token: $(AzToken)
-            rustSDK: $(Rust.SDK)
+            token: '$(AzToken)'
+            rustSDK: '$(Rust.SDK)'
 
       - job: CreateMsixBundle
         dependsOn:
@@ -288,7 +288,7 @@ extends:
             if ((openssl version -d) -match 'OPENSSLDIR: "(?<dir>.*?)"') {
               $env:OPENSSL_LIB_DIR = $matches['dir']
             }
-            $header = "Bearer " + $(AzToken)
+            $header = "Bearer $(AzToken)"
             $env:CARGO_REGISTRIES_POWERSHELL_TOKEN = $header
             $env:CARGO_REGISTRIES_POWERSHELL_CREDENTIAL_PROVIDER = 'cargo:token'
             ./build.ps1 -Release -Architecture aarch64-unknown-linux-musl