renamed env file

backend/.gitignore

@@ -37,4 +37,4 @@ out/
 .vscode/
 
 ### Misc ###
-.env_dev
+*.local

backend/src/main/resources/application.yaml

@@ -2,7 +2,7 @@ spring:
   application:
     name: vaessl
   config:
-    import: "optional:file:.env_dev[.properties]"
+    import: "optional:file:.env.local[.properties]"
   datasource:
     url : ${DB_URL}
     username: ${DB_USERNAME}