[CI] do not remove history of .deb

.gitlab-ci.yml

@@ -140,7 +140,7 @@ deploy_daily:
     - cd build
     - cp ${PKG_NAME} ${INSTALL_DIR}
     - cd ${INSTALL_DIR}
-    - find . -maxdepth 1 ! -name "${PKG_NAME}" ! -name "." -exec rm -rf {} +
+    - find . -maxdepth 1 ! -name "*.deb" ! -name "." -exec rm -rf {} +
     - dpkg -x ${PKG_NAME} .
     - DEB_PREFIX="mantid_ill_"
     - if [ -e ${DEB_PREFIX}5.deb ]; then rm ${DEB_PREFIX}5.deb; fi