chore(deps): bump postcss from 8.5.8 to 8.5.13 in /docs

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.8 to 8.5.13.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.5.8...8.5.13)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.13
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

app/boards/seeed/xiao_rp2040/Kconfig.xiao_rp2040

@@ -0,0 +1,10 @@
+# Copyright (c) 2026 Pete Johanson
+# SPDX-License-Identifier: MIT
+
+config BOARD_XIAO_RP2040
+    select ZMK_BOARD_COMPAT if BOARD_XIAO_RP2040_RP2040_ZMK
+    imply RETAINED_MEM if BOARD_XIAO_RP2040_RP2040_ZMK
+    imply RETENTION if BOARD_XIAO_RP2040_RP2040_ZMK
+    imply RETENTION_BOOT_MODE if BOARD_XIAO_RP2040_RP2040_ZMK
+
+

docs/docs/keymaps/behaviors/hold-tap.mdx

@@ -437,6 +437,10 @@ If enabled, the hold behavior will immediately be held on hold-tap press, and wi
 };
 ```
 
+:::warning[Interactions with combos]
+If the key position that has the hold-tap assigned is _also_ used in any combos, the `hold-while-undecided` behavior isn't immediate with key-down, but waits until all those combo timeouts have expired.
+:::
+
 #### `hold-while-undecided-linger`
 
 If your tap behavior activates the same modifier as the hold behavior, and you want to avoid a double tap when transitioning from the hold to the tap, you can use `hold-while-undecided-linger`. When enabled, the hold behavior will continue to be held until _after_ the tap behavior is released.

docs/docusaurus.config.js

@@ -152,10 +152,6 @@ module.exports = {
               label: "Mastodon",
               href: "https://fosstodon.org/@zmk",
             },
-            {
-              label: "Twitter",
-              href: "https://twitter.com/ZMKFirmware",
-            },
           ],
         },
         {

docs/package-lock.json

@@ -17623,9 +17623,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.8",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.8.tgz",
-      "integrity": "sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==",
+      "version": "8.5.13",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.13.tgz",
+      "integrity": "sha512-qif0+jGGZoLWdHey3UFHHWP0H7Gbmsk8T5VEqyYFbWqPr1XqvLGBbk/sl8V5exGmcYJklJOhOQq1pV9IcsiFag==",
       "funding": [
         {
           "type": "opencollective",