ci: quote Windows SSH key paths

Jenkinsfile

@@ -115,9 +115,12 @@ print('versions.json updated: symbolicator = ${env.IMAGE_VERSION}')
           keyFileVariable: 'GIT_SSH_KEY'
         )]) {
           script {
+            writeFile file: 'git-ssh.cmd',
+              text: '@echo off\r\nssh -i "%GIT_SSH_KEY%" -o IdentitiesOnly=yes %*\r\n'
+            try {
+              withEnv(["GIT_SSH=${pwd()}\\git-ssh.cmd"]) {
                 bat """
                   chcp 65001 >nul
-              set "GIT_SSH_COMMAND=ssh -i %GIT_SSH_KEY% -o IdentitiesOnly=yes"
                   git config user.email "jenkins@xuqm.com"
                   git config user.name "Jenkins CI"
                   git add ${env.VERSION_FILE}
@@ -125,6 +128,10 @@ print('versions.json updated: symbolicator = ${env.IMAGE_VERSION}')
                   git push origin HEAD:main
                 """
               }
+            } finally {
+              bat 'if exist git-ssh.cmd del /q git-ssh.cmd'
+            }
+          }
         }
       }
     }