feat: add epoch event stream to aggregate id

tests/store/add-many-events.ts

@@ -1,6 +1,5 @@
 import { assertEquals, assertObjectMatch, assertRejects } from "@std/assert";
 import { it } from "@std/testing/bdd";
-import { nanoid } from "nanoid";
 
 import { EventValidationError } from "../../mod.ts";
 import type { Events } from "../mocks/events.ts";
@@ -10,7 +9,7 @@ import { describe } from "../utilities/describe.ts";
 export default describe<Events>(".addSequence", (getEventStore) => {
   it("should insert 'user:created', 'user:name:given-set', and 'user:email-set' in a sequence of events", async () => {
     const { store } = await getEventStore();
-    const stream = nanoid();
+    const stream = crypto.randomUUID();
 
     const events = [
       store.event({
@@ -63,7 +62,7 @@ export default describe<Events>(".addSequence", (getEventStore) => {
 
   it("should not commit any events when insert fails", async () => {
     const { store } = await getEventStore();
-    const stream = nanoid();
+    const stream = crypto.randomUUID();
 
     await assertRejects(
       async () =>