change line 5 on database.js to remove deprecated connection options

[codestafa]

from

const conn = await mongoose.connect(process.env.DB_STRING, {
      useNewUrlParser: true,
      useUnifiedTopology: true,
      useFindAndModify: false,
      useCreateIndex: true
    })

to

const conn = await mongoose.connect(process.env.DB_STRING, {
      useFindAndModify: false,
      useCreateIndex: true,
    });

[romanstetsyk]

Sourse: https://mongoosejs.com/docs/migrating_to_6.html#no-more-deprecation-warning-options

[calebdye]

I have also opened a pull request for this as the app will crash with those connection options present. The mongoose version also needs to be updated to prevent crashes.