Updated FAQ with old repository information (alshedivat#2161)

Signed-off-by: George Araújo <george.gcac@gmail.com>

FAQ.md

@@ -11,6 +11,7 @@ Here are some frequently asked questions. If you have a different question, plea
 - [When trying to deploy, it's asking for github login credentials, which github disabled password authentication and it exits with an error. How to fix?](#when-trying-to-deploy-its-asking-for-github-login-credentials-which-github-disabled-password-authentication-and-it-exits-with-an-error-how-to-fix)
 - [When I manually run the Lighthouse Badger workflow, it fails with `Error: Input required and not supplied: token`. How do I fix that?](#when-i-manually-run-the-lighthouse-badger-workflow-it-fails-with-error-input-required-and-not-supplied-token-how-do-i-fix-that)
 - [My code runs fine locally, but when I create a commit and submit it, it fails with `prettier code formatter workflow run failed for master branch`. How do I fix that?](#my-code-runs-fine-locally-but-when-i-create-a-commit-and-submit-it-it-fails-with-prettier-code-formatter-workflow-run-failed-for-master-branch-how-do-i-fix-that)
+- [After I update my site with some new content, even a small change, the GitHub action throws an error or displays a warning. What happened?](#after-i-update-my-site-with-some-new-content-even-a-small-change-the-github-action-throws-an-error-or-displays-a-warning-what-happened)
 
 ---
 
@@ -49,3 +50,24 @@ You need to [create a personal access token](https://docs.github.com/en/authenti
 #### My code runs fine locally, but when I create a commit and submit it, it fails with `prettier code formatter workflow run failed for master branch`. How do I fix that?
 
 We implemented support for [Prettier code formatting](https://prettier.io/) in [#2048](https://github.com/alshedivat/al-folio/pull/2048). It basically ensures that your code is well formatted. If you want to ensure your code is compliant with `Prettier` you can install it in your computer [integrated with an editor](https://prettier.io/docs/en/editors), [install it and run manually](https://prettier.io/docs/en/install), or you can disable it for your repo. For this, just delete the file [.github/workflows/prettier.yml](https://github.com/alshedivat/al-folio/blob/master/.github/workflows/prettier.yml).
+
+#### After I update my site with some new content, even a small change, the GitHub action throws an error or displays a warning. What happened?
+
+Probably your GitHub workflow is throwing an error like this:
+
+```bash
+/opt/hostedtoolcache/Ruby/3.0.2/x64/lib/ruby/gems/3.0.0/gems/bundler-2.5.5/lib/bundler/runtime.rb:304:in `check_for_activated_spec!': You have already activated uri 0.10.1, but your Gemfile requires uri 0.13.0. Since uri is a default gem, you can either remove your dependency on it or try updating to a newer version of bundler that supports uri as a default gem. (Gem::LoadError)
+```
+
+or maybe displaying a warning like one of these:
+
+```
+Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
+Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, actions/cache@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
+The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/
+The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
+```
+
+If that's the case, you are using deprecated libraries/commands. This happens because you are using a very old version of al-folio. To fix this it is recommended [upgrading your code to the latest version](INSTALL.md#upgrading-from-a-previous-version) of the template. You will probably need to do some manual merging. If you find it easier, you could create a copy of your repository, do a fresh installation from the template and reapply all your changes. For this I would recommend a tool like [meld](https://meldmerge.org/) or [winmerge](https://winmerge.org/) to check the differences between directories/files.
+
+Note that libraries tend to be deprecated and support for them dropped as they are no longer maintained, and keep using them involves security breaches. Also, some of these deprecations are enforced, for example, by GitHub itself, so there's so much we can do. We have also added tons of new functionality, as well as tidying things up and improving the overall speed and structure, so you could also benefit from these improvements.