Add activate account to devops guidebook

Closes uis/devops/iam/activate-account/frontend#15

See merge request !387

Fix typo in standard arch diagram

See merge request !385

chore(ups): Minor updates and format fixes on UPS page

Closes #273

See merge request !378

feat: add standard architecture diagrams

Closes #215

See merge request !370

Add a first pass at some standard architecture diagrams for our typical
setups which can be re-used in documents intended for an external
audience. For the moment, lay the ground with an overview and ones
focussing on static IP-based ingress and egress. We can add more as need
arises.

Closes #215

chore(deps): update dependency uis/devops/continuous-delivery/ci-templates to v6

See merge request !381

minor additions to Prepare Your System page

See merge request !375

feat: Disable navigation.sections feature so sidebar sections are collapsible

Closes #274

See merge request !383

fix: AWS console admin policy example code

See merge request !380

fix: AWS console admin policy code

See merge request !379

I've additionally removed database connection details which are now
held within the ansible infrastructure repo.

fix(delete-product-infrastructure): add note on DNS resource records

See merge request !377

The Cloud DNS managed zone is a resource shared between the product
factory and downstream deployments. As such it is very easy to get into
a situation where there is a dangling record, either because the product
wasn't fully `terraform destroy`-ed before the GCP product factory
config was removed or because a resource record was manually created.

Google sensibly refuses to remove Cloud DNS managed zones which contain
records and it's not entirely clear whose responsibility it is, product
factory or per-product configuration, to ensure the zone is empty.

As we hope this is relatively rare, fix the issue through documentation
in the first instance.

docs: updated SQL backup related docs to reflect that data-backup is live

See merge request !374

chore: move LC to retired services

See merge request !373

chore(deps): update dependency uis/devops/continuous-delivery/ci-templates to v5.2.0

See merge request !371

fix(pre-commit): pin version of node used for running markdownlint

See merge request !372

For whatever reason, markdownlint-cli2 and node 23.0 don't like each
other and so we are getting failed jobs. For the moment work around this
by pinning the node language version.

Example failing job: https://gitlab.developers.cam.ac.uk/uis/devops/docs/guidebook/-/jobs/1785816

docs: update CamData service information

Closes #265

See merge request !355

Mark SharePoint as a legacy part of the CamData service, and explain how GCP
and Google Drive are now used instead.

Add more details about the CamData service, including how Drupal is used.

Fix bad link between "web application deployment" page and "DNS" page.

Closes #265

Upgrade to a more recent version of Material for MkDocs, and enable the
subsequently available `content.tooltips` theme feature.