Update 70checkmarketplace.yml

Author: tomcat323

buildspec/release/70checkmarketplace.yml

@@ -37,6 +37,7 @@ phases:
             # keep installing the desired extension version until successful. Otherwise fail on codebuild timeout (1 hour).
             - |
                 while true; do
+                  code --uninstall-extension "${extension_name}" --no-sandbox --user-data-dir /tmp/vscode
                   code --install-extension "${extension_name}@${VERSION}" --no-sandbox --user-data-dir /tmp/vscode
                   cur_version=$(code --list-extensions --show-versions --no-sandbox --user-data-dir /tmp/vscode | grep ${extension_name} | cut -d'@' -f2)
                   if [ "${cur_version}" = "${VERSION}" ]; then