Fix postman collection

[DDmit04]

🐛 Describe the bug

There some errors in postman collection.

⚠️ Current behavior

1. No GET /communities/{communityId}/amenities mapping present in collection
2. POST /auth/login mapping have wrong body params (no user with this email and password)

✅ Expected behavior

1. Add GET /communities/{communityId}/amenities mapping
2. Cange body params from

{
	"email" : "testuser@myhome.com",
	"password" : "testpassword"
}

to

{
	"email" : "test@test.com",
	"password" : "testtest"
}

and add default email/password to postman variables

[13413rahul]

hey @DDmit04
I would like to fix this issue

[bayotheman]

hi @jmprathab @DDmit04 @DDmit04, can I take on this task

[allanrizza]

@mslowiak @DDmit04 can I take this issue?