fix: ignore .all-contributorsrc in cspell.json (#1694)

## PR Checklist

- [x] Addresses an existing open issue: fixes #1691
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/create-typescript-app/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/create-typescript-app/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

💖

Author: JoshuaKGoldberg

cspell.json

@@ -3,6 +3,7 @@
 	"ignorePaths": [
 		"./coverage*",
 		"./script/__snapshots__",
+		".all-contributorsrc",
 		".github",
 		"CHANGELOG.md",
 		"lib",

script/__snapshots__/migrate-test-e2e.ts.snap

@@ -71,6 +71,7 @@ exports[`expected file changes > cspell.json 1`] = `
  	"ignorePaths": [
 -		"./coverage*",
 -		"./script/__snapshots__",
+ 		".all-contributorsrc",
  		".github",
  		"CHANGELOG.md",
 +		"coverage",

src/steps/writing/creation/rootFiles.ts

@@ -95,6 +95,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 			"cspell.json": await formatJson({
 				dictionaries: ["typescript"],
 				ignorePaths: [
+					...(options.excludeAllContributors ? [] : [".all-contributorsrc"]),
 					".github",
 					"CHANGELOG.md",
 					...(options.excludeTests ? [] : ["coverage"]),