Add ``last updated`` for document (#11164)

## Summary

![image](https://github.com/user-attachments/assets/75431f9f-debe-435d-a02e-d216be7a3a01)

![image](https://github.com/user-attachments/assets/2d1b895e-4878-410e-90ff-ff8e932cbf24)
Display the last document update time, excluding any automatically
generated parts of the document, while ensuring that Google can
accurately read and recognize the webpage's time.

Note that I do not have permission to update
``requirements-insiders.txt``


Google time info
*
https://developers.google.com/search/blog/2019/03/help-google-search-know-best-date-for
*
https://developers.google.com/search/docs/appearance/structured-data/article#amp

Similar https://github.com/astral-sh/uv/pull/11162
Closes #11148
## Test Plan
uvx --with-requirements docs/requirements.txt -- mkdocs serve -f
mkdocs.public.yml --strict

![image](https://github.com/user-attachments/assets/6e8cd609-2e60-489c-97cc-fb28aa3204e0)
The correct format is actually ``2024-08-08T22:01:08Z``, but Google
Search happens to be lenient and accepts this format.

![image](https://github.com/user-attachments/assets/2ec8ce98-49ea-403b-bbd2-3d0d5630a562)

.github/workflows/publish-docs.yml

@@ -26,6 +26,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           ref: ${{ inputs.ref }}
+          fetch-depth: 0
 
       - uses: actions/setup-python@v5
         with:

docs/.overrides/main.html

@@ -21,6 +21,10 @@
 <meta name="robots" content="index,follow"/>
 <script type="application/ld+json">
     {
+        {% if page and page.meta.git_revision_date_localized_raw_iso_datetime %}
+        "datePublished": "{{ page.meta.git_revision_date_localized_raw_iso_datetime }}Z",
+        "dateModified": "{{ page.meta.git_revision_date_localized_raw_iso_datetime  }}Z",
+        {% endif %}
         "@context": "https://schema.org",
         "@type": "WebSite",
         "name": "Astral Docs",

docs/requirements.in

@@ -6,3 +6,4 @@ mdformat>=0.7.17
 mdformat-mkdocs>=2.0.4
 mdformat-admon>=2.0.2
 mkdocs-redirects>=1.2.2
+mkdocs-git-revision-date-localized-plugin>=1.3.0

docs/requirements.txt

@@ -1,7 +1,9 @@
 # This file was autogenerated by uv via the following command:
 #    uv pip compile docs/requirements.in -o docs/requirements.txt --universal -p 3.12
 babel==2.15.0
-    # via mkdocs-material
+    # via
+    #   mkdocs-git-revision-date-localized-plugin
+    #   mkdocs-material
 black==24.4.2
     # via -r docs/requirements.in
 certifi==2024.7.4
@@ -19,6 +21,10 @@ colorama==0.4.6
     #   mkdocs-material
 ghp-import==2.1.0
     # via mkdocs
+gitdb==4.0.12
+    # via gitpython
+gitpython==3.1.44
+    # via mkdocs-git-revision-date-localized-plugin
 idna==3.7
     # via requests
 jinja2==3.1.4
@@ -72,10 +78,13 @@ mergedeep==1.3.4
 mkdocs==1.6.0
     # via
     #   -r docs/requirements.in
+    #   mkdocs-git-revision-date-localized-plugin
     #   mkdocs-material
     #   mkdocs-redirects
 mkdocs-get-deps==0.2.0
     # via mkdocs
+mkdocs-git-revision-date-localized-plugin==1.3.0
+    # via -r docs/requirements.in
 mkdocs-material==9.5.29
     # via -r docs/requirements.in
 mkdocs-material-extensions==1.3.1
@@ -106,6 +115,8 @@ pymdown-extensions==10.8.1
     # via mkdocs-material
 python-dateutil==2.9.0.post0
     # via ghp-import
+pytz==2025.1
+    # via mkdocs-git-revision-date-localized-plugin
 pyyaml==6.0.1
     # via
     #   mkdocs
@@ -120,6 +131,8 @@ requests==2.32.3
     # via mkdocs-material
 six==1.16.0
     # via python-dateutil
+smmap==5.0.2
+    # via gitdb
 uc-micro-py==1.0.3
     # via linkify-it-py
 urllib3==2.2.2

mkdocs.public.yml

@@ -2,6 +2,8 @@ INHERIT: mkdocs.template.yml
 # Omit the `typeset` plugin which is only available in the Insiders version.
 plugins:
   - search
+  - git-revision-date-localized:
+      timezone: UTC # It can only be in UTC unless the ISO time can include timezone.
 validation:
   anchors: warn
 watch: