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.

----------------------------------------------------
While running pretext, the following errors occurred:

(see log messages above or in the 'logs' folder for more information)
----------------------------------------------------

Author: oscarlevin

Diff for: .devcontainer.json

@@ -1,13 +1,14 @@
-// <!-- Managed automatically by PreTeXt authoring tools -->
-// (delete the above line to manage this file manually)
+// This file was automatically generated with PreTeXt 2.12.0.
+// If you modify this file, PreTeXt will no longer automatically update it.
+//
 //////////////////////////////////////////////////////////////
 //
-// This file provides configuration options so that a PreTeXt 
+// This file provides configuration options so that a PreTeXt
 //   project can be edited and built using GitHub's Codespaces.
 // It is recommended to keep this in your repository even if you
-//   do not use this feature, as it will allow other to explore 
-//   your project easily.   
-// This file will be automatically generated by PreTeXt with the 
+//   do not use this feature, as it will allow other to explore
+//   your project easily.
+// This file will be automatically generated by PreTeXt with the
 //   latest updates unless you remove the first comment line above.
 //
 ///////////////////////////////////////////////////////////////

Diff for: .github/workflows/pretext-cli.yml

@@ -1,6 +1,6 @@
-# <!-- Managed automatically by PreTeXt authoring tools -->
-# (delete the above line to manage this file manually)
-
+# This file was automatically generated with PreTeXt 2.12.0.
+# If you modify this file, PreTeXt will no longer automatically update it.
+#
 name: PreTeXt-CLI Actions
 on:
     # Runs on pull requests

Diff for: .gitignore

@@ -1,6 +1,6 @@
-# <!-- Managed automatically by PreTeXt authoring tools -->
-# (delete the above line to manage this file manually)
-
+# This file was automatically generated with PreTeXt 2.12.0.
+# If you modify this file, PreTeXt will no longer automatically update it.
+#
 # Boilerplate list of files in a PreTeXt project for git to ignore
 # ensure this file is tracked
 !.gitignore
@@ -90,6 +90,8 @@ bh_unicode_properties.cache
 # https://packagecontrol.io/packages/sublime-github
 GitHub.sublime-settings
 
+# Don't track common virtual environment directories
+venv/
 
 # Don't include Dropbox settings and caches
 .dropbox

Diff for: project.ptx

@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!-- This file was automatically generated by PreTeXt 2.12.0. -->
+<!-- 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. -->
 <project ptx-version="2">
   <targets>

Diff for: requirements.txt

@@ -1,2 +1,2 @@
-# <!-- Managed automatically by PreTeXt authoring tools -->
-pretext == 2.11.4
+# This file was automatically generated with PreTeXt 2.12.0.
+pretext == 2.12.0