[CICD-77] Prevent plugin and theme conflicts from adversely affecting cache clear (#29)

* Skip loading plugins and themes for cache clear

* Add changeset

Author: apmatthews

.changeset/good-pears-play.md

@@ -0,0 +1,5 @@
+---
+"@wpengine/github-action-wpe-site-deploy": patch
+---
+
+Prevent plugin and theme conflicts from adversely affecting cache clear

entrypoint.sh

@@ -80,7 +80,7 @@ fi
 
 # post deploy cache clear
 if [ "${INPUT_CACHE_CLEAR^^}" == "TRUE" ]; then
-    CACHE_CLEAR="&& wp page-cache flush"
+    CACHE_CLEAR="&& wp --skip-plugins --skip-themes page-cache flush"
   elif [ "${INPUT_CACHE_CLEAR^^}" == "FALSE" ]; then
       CACHE_CLEAR=""
   else echo "CACHE_CLEAR must be TRUE or FALSE only... Cache not cleared..."  && exit 1;