update to latest PreTeXt project found in /home/runner/work/pretext-cli/pretext-cli.

�[31merror: �[0mA project already exists in `/home/runner/work/pretext-cli/pretext-cli` (it contains the file `project.ptx`).
�[31merror: �[0mNo new project will be generated.

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While running pretext, the following errors occurred:

(see log messages above or in the 'logs' folder for more information)
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Author: oscarlevin

project.ptx

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- This file was automatically generated by PreTeXt 2.13.2. -->
+<!-- This file was automatically generated by PreTeXt 2.13.3. -->
 <!-- If you modify this file, PreTeXt will no longer automatically update it.-->
 
 <!-- This file, the project manifest, provides the overall configuration for your PreTeXt project. To edit the content of your document, open `source/main.ptx`. See https://pretextbook.org/doc/guide/html/processing-CLI.html#cli-project-manifest. -->

requirements.txt

@@ -1,2 +1,2 @@
-# This file was automatically generated with PreTeXt 2.13.2.
-pretext == 2.13.2
+# This file was automatically generated with PreTeXt 2.13.3.
+pretext == 2.13.3