chore(deps): update dependency fetch-mock to v12

package.json

@@ -35,7 +35,7 @@
     "@types/node": "^22.0.0",
     "@vitest/coverage-v8": "^3.0.0",
     "esbuild": "^0.24.0",
-    "fetch-mock": "^11.0.0",
+    "fetch-mock": "^12.0.0",
     "glob": "^10.2.6",
     "prettier": "3.4.2",
     "semantic-release-plugin-update-version-in-files": "^1.0.0",

test/paginate.test.ts

@@ -372,10 +372,12 @@ describe("pagination", () => {
       ],
     };
     const mock = fetchMock
-      .sandbox()
+      .createInstance()
       .post("https://api.github.com/graphql", mockResponse);
 
-    const octokit = new PatchedOctokit({ request: { fetch: mock } });
+    const octokit = new PatchedOctokit({
+      request: { fetch: mock.fetchHandler },
+    });
     const query = `{
         viewer {
           bioHtml
@@ -398,11 +400,15 @@ describe("pagination", () => {
   });
 
   it(".paginate() passes 500 errors on.", async (): Promise<void> => {
-    const mock = fetchMock.sandbox().post("https://api.github.com/graphql", {
-      status: 500,
-    });
+    const mock = fetchMock
+      .createInstance()
+      .post("https://api.github.com/graphql", {
+        status: 500,
+      });
 
-    const octokit = new PatchedOctokit({ request: { fetch: mock } });
+    const octokit = new PatchedOctokit({
+      request: { fetch: mock.fetchHandler },
+    });
     const func = async () =>
       await octokit.graphql.paginate<TestResponseType>(`
       query paginate($cursor: String) {

test/testHelpers/mock-octokit.ts

@@ -8,9 +8,9 @@ const MockOctokit = ({ responses = [{}] }: { responses?: any[] } = {}) => {
   let calledQueries: string[] = [];
   let passedVariables: any[] = [];
   let callCount = 0;
-  const mock = fetchMock.sandbox().post(
+  const mock = fetchMock.createInstance().post(
     "https://api.github.com/graphql",
-    (_, options) => {
+    ({ options }) => {
       calledQueries.push(JSON.parse(options.body!.toString()).query);
       passedVariables.push(JSON.parse(options.body!.toString()).variables);
       callCount = callCount + 1;
@@ -21,7 +21,7 @@ const MockOctokit = ({ responses = [{}] }: { responses?: any[] } = {}) => {
 
   const octokit = new PatchedOctokit({
     request: {
-      fetch: mock,
+      fetch: mock.fetchHandler,
     },
   });