Bump version to 0.12 to override a bug deploy

** Why are these changes being introduced:

* It appears that the workflows we are using for automated deploys are
  not quite scoped correcty, as a pre-release tag on a feature branch
  has been deployed in production.

** Relevant ticket(s):

n/a

** How does this address that need:

* This bumps the theme config.ini version to 0.12, which will give us
  something to deploy in production that isn't on a feature branch.

** Document any side effects to this change:

* Tagging this release will cause some features to be released in
  production which have not yet been, because they are waiting for a
  tag to be created. This is acceptable, but should be noted.

Author: matt-bernhardt

config/theme.ini

@@ -1,6 +1,6 @@
 [info]
 name = "Tesseract"
-version = "0.11"
+version = "0.12"
 author = "MIT Libraries"
 description = "An Omeka S theme to implement the MIT Libraries' branding materials"
 theme_link = "https://github.com/MITLibraries/mitlibraries-theme-omeka"