fix: 修复中文感叹号语法错误

BRANCH_NAME条件判断使用了中文！改为英文!=运算符

Jenkinsfile

@@ -179,7 +179,7 @@ pipeline {
                                 if (params.avg) {
                                     buildParams += " --avg=${params.avg}"
                                 }
-                                if (params.BRANCH_NAME && params.BRANCH_NAME ！= "unknown") {
+                                if (params.BRANCH_NAME && params.BRANCH_NAME != "unknown") {
                                      buildParams += " --branch=${params.BRANCH_NAME}"
                                 }