fix: update remaining pnpm references from 8.14.1 to 8.15.1

Author: JoshuaKGoldberg

src/steps/writing/creation/writePackageJson.test.ts

@@ -91,7 +91,7 @@ describe("writePackageJson", () => {
 			  },
 			  "main": "./lib/index.js",
 			  "name": "test-repository",
-			  "packageManager": "pnpm@8.14.1",
+			  "packageManager": "pnpm@8.15.1",
 			  "publishConfig": {
 			    "provenance": true,
 			  },
@@ -162,7 +162,7 @@ describe("writePackageJson", () => {
 			  },
 			  "main": "./lib/index.js",
 			  "name": "test-repository",
-			  "packageManager": "pnpm@8.14.1",
+			  "packageManager": "pnpm@8.15.1",
 			  "publishConfig": {
 			    "provenance": true,
 			  },

src/steps/writing/creation/writePackageJson.ts

@@ -75,7 +75,7 @@ export async function writePackageJson(options: Options) {
 		},
 		main: "./lib/index.js",
 		name: options.repository,
-		packageManager: "pnpm@8.14.1",
+		packageManager: "pnpm@8.15.1",
 		publishConfig: {
 			provenance: true,
 		},