ci(release): fix version bumping in extra-file (#3772)

## What is this PR for?

Fix release-please CI so the version in the `extra-file` is bumped.

## Does this PR fix an existing issue?

No

## Checklist

- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.

ref: folke/lazy.nvim#1534

---------

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

.github/.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+  ".": "12.18.0"
+}

.github/release-please-config.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "packages": {
+    ".": {
+      "release-type": "simple",
+      "extra-files": ["lua/lazyvim/config/init.lua"]
+    }
+  }
+}

.github/workflows/ci.yml

@@ -67,7 +67,8 @@ jobs:
       - uses: googleapis/release-please-action@v4
         id: release
         with:
-          release-type: simple
+          config-file: .github/release-please-config.json
+          manifest-file: .github/.release-please-manifest.json
       - uses: actions/checkout@v4
       - name: tag stable versions
         if: ${{ steps.release.outputs.release_created }}

doc/LazyVim.txt

@@ -1,4 +1,4 @@
-*LazyVim.txt*           For Neovim >= 0.9.0          Last change: 2024 June 21
+*LazyVim.txt*           For Neovim >= 0.9.0          Last change: 2024 June 23
 
 ==============================================================================
 Table of Contents                                  *LazyVim-table-of-contents*

release-please-config.json

@@ -1,5 +0,0 @@
-{
-  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
-  "release-type": "simple",
-  "extra-files": ["lua/lazyvim/config/init.lua"]
-}