refactor: use _HANDLER variable instead of HANDLER in the bootstrap

Author: skunxicat

runtime/bootstrap

@@ -6,7 +6,7 @@
 set -eo pipefail
 
 # Initialization - load function handler
-source $LAMBDA_TASK_ROOT/"$(echo $HANDLER | cut -d. -f1).sh"
+source $LAMBDA_TASK_ROOT/"$(echo $_HANDLER | cut -d. -f1).sh"
 
 # Processing
 while true
@@ -19,7 +19,7 @@ do
   REQUEST_ID=$(grep -Fi Lambda-Runtime-Aws-Request-Id "$HEADERS" | tr -d '[:space:]' | cut -d: -f2)
 
   # Run the handler function from the script
-  RESPONSE=$($(echo "$HANDLER" | cut -d. -f2) "$EVENT_DATA")
+  RESPONSE=$($(echo "$_HANDLER" | cut -d. -f2) "$EVENT_DATA")
 
 
   echo "$RESPONSE" | curl -sS -X POST \