Format yaml files using Spotless.

[motlin]

Another example based on #1687, to show off the kind of thing that Spotless can do, this time in a language other than Java.

This was created with the command:

mvn spotless:apply --activate-profiles 'spotless-apply,spotless-yaml'

[donraab]

@motlin This looks to be replacing single quotes with double quotes. Are double quotes preferred in YAML?

[motlin]

@motlin This looks to be replacing single quotes with double quotes. Are double quotes preferred in YAML?

Honestly, I'm not sure. I just noticed we are inconsistent and it's one of the things that's easy to demo with Spotless. Searching for this question:

Single quotes (''):

• Preserve the literal value of all characters inside
• Don't allow escaping of characters
• To include a single quote in the string, you need to double it

Double quotes (""):

• Allow for escaped characters using backslashes
• Enable the use of special characters like \n for newline

General recommendations:

Use single quotes as the default for most strings, especially if they don't contain special characters or escapes.

I can switch to single!

[motlin]

@motlin This looks to be replacing single quotes with double quotes. Are double quotes preferred in YAML?

Switched to single quotes.

[donraab]

LGTM