Update changelog.mdx (#1965)

Co-authored-by: mintlify[bot] <109931778+mintlify[bot]@users.noreply.github.com>

Author: mintlify[bot]

changelog.mdx

@@ -5,6 +5,17 @@ rss: true
 noindex: true
 ---
 
+<Update label="December 1" tags={["New releases"]} rss={{ title: ".mintignore support", description: "Exclude files and directories from your published documentation" }}>
+  ## .mintignore support
+
+  - Added `.mintignore` file support to exclude specific files and directories from being processed and published to your documentation site.
+  - Uses the same pattern syntax as `.gitignore` for familiar configuration.
+  - Excluded files don't appear in published docs, aren't indexed for search, and aren't accessible to visitors.
+
+  Learn more in the [.mintignore documentation](/organize/mintignore).
+
+</Update>
+
 <Update label="November 25" tags={["Improvements"]} rss={{ title: "Vale version upgrade", description: "Vale version 3.10+ now supported" }}>
   ## Vale version upgrade