[Maven] fix Spaces in Windows user path breaks build on test goal

Created by: karismann

PR checklist

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• Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change. (For instance, only need to run ./bin/{LANG}-petstore.sh, ./bin/openapi3/{LANG}-petstore.sh, ./bin/security/{LANG}-petstore.sh and ./bin/openapi3/security/{LANG}-petstore.sh if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in .\bin\windows\.
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Description of the PR

fix #2025 (closed)

pom.xml

@@ -159,7 +159,7 @@
                     <useSystemClassLoader>false</useSystemClassLoader>
                     <testNGArtifactName>none:none</testNGArtifactName>
                     <argLine>-XX:+StartAttachListener</argLine>
-                    <argLine>-javaagent:${settings.localRepository}/org/jmockit/jmockit/${jmockit-version}/jmockit-${jmockit-version}.jar</argLine>
+                    <argLine>-javaagent:"${settings.localRepository}/org/jmockit/jmockit/${jmockit-version}/jmockit-${jmockit-version}.jar"</argLine>
                 </configuration>
                 <executions>
                     <execution>