pythonGH-136155: Use sphinxext-opengraph v0.12.0 (python#137393)

Author: AA-Turner

Doc/conf.py

@@ -601,9 +601,8 @@
 ogp_site_url = 'https://docs.python.org/3/'
 ogp_site_name = 'Python documentation'
 ogp_image = '_static/og-image.png'
-if 'builder_html' in tags:  # noqa: F821
-    ogp_custom_meta_tags = [
-        '<meta property="og:image:width" content="200">',
-        '<meta property="og:image:height" content="200">',
-        '<meta name="theme-color" content="#3776ab">',
-    ]
+ogp_custom_meta_tags = (
+    '<meta property="og:image:width" content="200">',
+    '<meta property="og:image:height" content="200">',
+    '<meta name="theme-color" content="#3776ab">',
+)

Doc/requirements.txt

@@ -11,7 +11,7 @@ sphinx~=8.2.0
 
 blurb
 
-sphinxext-opengraph~=0.11.0
+sphinxext-opengraph~=0.12.0
 sphinx-notfound-page~=1.0.0
 
 # The theme used by the documentation is stored separately, so we need