[bot]update openapi3 schema

Author: github-actions[bot]

api/build/core-openapi3.yaml

@@ -1325,18 +1325,21 @@ components:
         - `export[numbers]` is the word `export` with 20 random digits appended to it
         - `user` is the actors' name
         - `subdomain.example.com` is the FQDN of the server the actor is registered on.
-        This file archive contains a file `messages.json` which is a JSON `MessageBatch` of all
-        messages sent by the user. Note the [definition of the word "message" in polyproto](https://docs.polyphony.chat/Protocol%20Specifications/core/#:~:text=software%20for%20clients.-,message%2C%20messages,-%3A%20In%20the%20context).
-        If the server where the data export was requested from has [RawR](https://docs.polyphony.chat/Protocol%20Specifications/core/#731-resource-addressing-with-relative-roots)
-        enabled, the file archive will contain a folder named `rawr`. This folder contains all
-        RawR-content uploaded by the actor to that server. The files in this folder are named after
-        the resource ID. File extensions are only added if they were known to the server. An
-        example file name might be `2c851bfb6daffa944fa1723c7bd4d362ffbc9defe292f2daaf05e895989d179b.jxl`,
-        referencing the file which was hosted at `<server_url>/.p2/core/resource/2c851bfb6daffa944fa1723c7bd4d362ffbc9defe292f2daaf05e895989d179b.jxl`.
+        This file archive contains a file `messages.p2mb` which is a JSON file containing [message batches](https://docs.polyphony.chat/Protocol%20Specifications/core/#721-message-batches)
+        of all messages sent by the user. If the server where the data export was requested from has
+        [RawR](https://docs.polyphony.chat/Protocol%20Specifications/core/#731-resource-addressing-with-relative-roots) enabled, the file archive will contain a
+        folder named `rawr`. This folder contains all RawR content uploaded by the actor to that server.
+        The files in this folder are named after the resource ID given to the resource. File extensions are only
+        added if they were known to the server. An example file name might be
+        `2c851bfb6daffa944fa1723c7bd4d362ffbc9defe292f2daaf05e895989d179b.jxl`, referencing the file
+        which was hosted at `<server_url>/.p2/core/resource/2c851bfb6daffa944fa1723c7bd4d362ffbc9defe292f2daaf05e895989d179b.jxl`.
         If the server where the data export was requested from is the actors' home server, the
-        archive will contain two folders `certs` and `crypt_certs`. `certs` will contain all ID-Certs
-        the server has stored of the actor. `crypt_certs` will contain all encrypted private key
-        material that the actor has uploaded to the server.
+        archive will contain a folder `certs` and a file `crypt_certs.p2epk`. `certs` will contain all ID-Certs
+        the server has stored of the actor. The ID-Certs will be stored in
+        [ASCII PEM format](https://web.archive.org/web/20250107131731/https://learn.microsoft.com/en-us/azure/iot-hub/reference-x509-certificates#:~:text=ASN.1%20encoding.-,ascii%20pem%20format,-A%20PEM%20certificate).
+        The file `crypt_certs.p2epk` contains all [encrypted private key material](https://docs.polyphony.chat/Protocol%20Specifications/core/#63-private-key-loss-prevention-and-private-key-recovery)
+        that the actor has uploaded to the server. Just like `messages.p2mb`, `crypt_certs.p2epk` is a standard
+        JSON file.
     polyproto.core.models.Service:
       type: object
       required: