Update application-dev.yml

src/main/resources/application-dev.yml

 healthcare:
   datasource:
-    url: jdbc:mariadb://localhost:3307/healthcare?createDatabaseIfNotExist=true
-    port: 3307
+    url: jdbc:mariadb://localhost:3306/healthcare?createDatabaseIfNotExist=true
+    port: 3306
     username: root
-    password: root
\ No newline at end of file
+    password: comsc
\ No newline at end of file