Update memoize dependency

lib/snapshot-manager.js

@@ -9,7 +9,7 @@ import zlib from 'node:zlib';
 import cbor from 'cbor';
 import concordance from 'concordance';
 import indentString from 'indent-string';
-import mem from 'mem';
+import memoize from 'memoize';
 import writeFileAtomic from 'write-file-atomic';
 
 import {snapshotManager as concordanceOptions} from './concordance-options.js';
@@ -395,7 +395,7 @@ class Manager {
 	}
 }
 
-const resolveSourceFile = mem(file => {
+const resolveSourceFile = memoize(file => {
 	const sourceMap = findSourceMap(file);
 	// Prior to Node.js 18.8.0, the value when a source map could not be found was `undefined`.
 	// This changed to `null` in <https://github.com/nodejs/node/pull/43875>. Check both.
@@ -413,7 +413,7 @@ const resolveSourceFile = mem(file => {
 		: payload.sources[0];
 });
 
-export const determineSnapshotDir = mem(({file, fixedLocation, projectDir}) => {
+export const determineSnapshotDir = memoize(({file, fixedLocation, projectDir}) => {
 	const testDir = path.dirname(resolveSourceFile(file));
 	if (fixedLocation) {
 		const relativeTestLocation = path.relative(projectDir, testDir);

package.json

@@ -106,7 +106,7 @@
 		"is-plain-object": "^5.0.0",
 		"is-promise": "^4.0.0",
 		"matcher": "^5.0.0",
-		"mem": "^9.0.2",
+		"memoize": "^10.0.0",
 		"ms": "^2.1.3",
 		"p-map": "^6.0.0",
 		"package-config": "^5.0.0",