Update requirements reflecting we're now on django 4.2

Author: mhagander

docs/dev_install.rst

@@ -5,8 +5,8 @@ So, you're ready to contribute to pgweb, and you want to set up a
 local working copy of the website code, so you have something to work
 with. Here's a quick step-by-step on how to do that:
 
-#. Make sure you have downloaded and installed django *version 3.2*,
-   and python 3 (tested with version 3.7).
+#. Make sure you have downloaded and installed django *version 4.2*,
+   and python 3 (tested with version 3.9).
 
    You will also need a few other dependencies, see the
    `requirements.txt` in the root directory.

requirements.txt

@@ -1,4 +1,4 @@
-Django>=3.2,<3.3
+Django>=4.2,<4.3
 psycopg2==2.8.5
 pycryptodomex>=3.4.7,<3.5
 Markdown==3.0.1