Update UI Reference for Dependency Graph settings

[BaylorRice]

The UI element name for accessing the dependency graph settings was changed from "Advanced Security" to "Code Security"

Why:

At some point, the name of the sub-menu that contains the settings for the Dependency Graph was changed from "Advanced Security" to "Code Security", and this PR aims to propagate that change to the docs.

Closes: #37541

What's being changed (if available, include any code snippets, screenshots, or gifs):

The UI-element that directs users to a repository settings sub-menu is changed from "Advanced Security" to "Code Security"

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

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The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on the review server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
code-security/getting-started/quickstart-for-securing-your-repository.md	fpt ghec ghes@ 3.16 3.15 3.14 3.13 3.12	fpt ghec ghes@ 3.16 3.15 3.14 3.13 3.12

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[BaylorRice]

Reviewed via codespace (Highlighted for convivence. Highlight not present on page):

[BaylorRice]

Found a commit two weeks ago (42c8d86) setting this setting that I am now undoing. It must be intentional, so I am closing this request.