Update timescales for the ICO to respond to a complaint

[cmenon12]

Update ICO timescales for responding to a complaint.

What does this do?

Updates the help page with updated information about how quickly the ICO aims to respond to a complaint.

Why was this needed?

The existing timescales were unrealistically short, and not reflective of reality.

Implementation notes

See the links below for references:

• https://ico.org.uk/about-the-ico/our-information/our-service-standards/#:~:text=We%20aim%20to%20resolve%2090%25%20of%20FOIA%20and%20EIR%20complaint%20cases%20within%20six%20months%20of%20receiving%20an%20eligible%20complaint%2C%20and%2099%25%20of%20all%20complaints%20within%20twelve%20months%20of%20receipt.
• https://ico.org.uk/for-organisations/foi/foi-complaints-and-ico-enforcement-powers/#5

The first sentence about the case number and case officer assignment are taken from the "Thank You" page after submitting a complaint, as shown below.

[cmenon12]

Hi @garethrees I've rebased this onto the master branch after the workflows previously failed, are you or a colleague happy to review this please?

[garethrees]

Hey @cmenon12, sorry about the lag. The ICO is actually pretty quick in dealing with complete non-responses, which this help page is about. They do have lengthier timelines for challenging substantive responses though, which is what the guidance you refer to relates to, and we warn about that elsewhere. Going to close this, but thanks so much for taking the time to contribute 🙏