Bump v0.29 release references

docs/en/modules/ROOT/pages/index.adoc

@@ -10,7 +10,7 @@ You’ve found the documentation for Decidim. Learn about the project at https:/
 
 [NOTE]
 ====
-This is the documentation for the `develop` branch. You can see this same documentation site for other versions: xref:v0.28@ROOT:index.adoc[v0.28] and xref:v0.27@ROOT:index.adoc[v0.27]
+This is the documentation for the `develop` branch. You can see this same documentation site for other versions: xref:v0.29@ROOT:index.adoc[v0.29], xref:v0.28@ROOT:index.adoc[v0.28] and xref:v0.27@ROOT:index.adoc[v0.27]
 ====
 
 // * Read the xref:ROOT:getting-started.adoc[Getting Started guide]

docs/en/modules/releases/pages/index.adoc

@@ -6,7 +6,8 @@ You can find all the releases (with minor and patches) at
 https://rubygems.org/gems/decidim/versions[RubyGems.org] and
 https://github.com/decidim/decidim/releases[GitHub].
 
-* https://decidim.org/blog/2023-12-20-new-version-0-28-0/[Version 0.28 (2022-12-20)]
+* https://decidim.org/blog/2024-09-12-new-version-0-29-0/[Version 0.29 (2024-09-12)]
+* https://decidim.org/blog/2023-12-20-new-version-0-28-0/[Version 0.28 (2023-12-20)]
 * https://decidim.org/blog/2022-09-30-new-version-0-27-0/[Version 0.27 (2022-09-30)]
 * https://decidim.org/blog/2022-02-22-new-version-0-26-0/[Version 0.26 (2022-02-22)]
 * https://decidim.org/blog/2021-10-07-new-version-0-25-0/[Version 0.25 (2021-10-07)]