Updated mimetype from 'text/javascript' to 'application/javascript' as 'text/javascript' is obsolete. Fixes #6079

docs/en_US/release_notes_4_30.rst

@@ -14,6 +14,7 @@ Housekeeping
 ************
 
 | `Issue #6052 <https://redmine.postgresql.org/issues/6052>`_ -  Added connected pgAdmin user and connection name in the log file.
+| `Issue #6079 <https://redmine.postgresql.org/issues/6079>`_ -  Updated mimetype from 'text/javascript' to 'application/javascript' as 'text/javascript' is obsolete.
 
 Bug fixes
 *********

web/pgadmin/__init__.py

@@ -48,7 +48,7 @@ from pgadmin.utils.security_headers import SecurityHeaders
 # affect pgAdmin 4 to be load properly. This will avoid the issues that may
 # occur due to security fix of X_CONTENT_TYPE_OPTIONS = "nosniff".
 import mimetypes
-mimetypes.add_type('text/javascript', '.js')
+mimetypes.add_type('application/javascript', '.js')
 mimetypes.add_type('text/css', '.css')
 
 winreg = None