[fix] uWSGI: increase buffer-size

Increase max size of a request, by default it is 4k [1].  4096 as buffer-size is
too small and will result in the preference urls not working.

[1] https://uwsgi-docs.readthedocs.io/en/latest/Options.html#buffer-size

utils/templates/etc/uwsgi/apps-archlinux/searxng.ini

@@ -70,6 +70,7 @@ pythonpath = ${SEARXNG_SRC}
 # Native HTTP support: https://uwsgi-docs.readthedocs.io/en/latest/HTTP.html
 
 http = ${SEARXNG_INTERNAL_HTTP}
+buffer-size = 8192
 
 # uWSGI serves the static files and in settings.yml we use::
 #

utils/templates/etc/uwsgi/apps-archlinux/searxng.ini:socket

@@ -67,6 +67,7 @@ pythonpath = ${SEARXNG_SRC}
 # -----------------
 
 socket = ${SEARXNG_UWSGI_SOCKET}
+buffer-size = 8192
 
 # uWSGI serves the static files and in settings.yml we use::
 #

utils/templates/etc/uwsgi/apps-available/searxng.ini

@@ -73,6 +73,7 @@ pythonpath = ${SEARXNG_SRC}
 # Native HTTP support: https://uwsgi-docs.readthedocs.io/en/latest/HTTP.html
 
 http = ${SEARXNG_INTERNAL_HTTP}
+buffer-size = 8192
 
 # uWSGI serves the static files and in settings.yml we use::
 #

utils/templates/etc/uwsgi/apps-available/searxng.ini:socket

@@ -70,6 +70,7 @@ pythonpath = ${SEARXNG_SRC}
 # -----------------
 
 socket = ${SEARXNG_UWSGI_SOCKET}
+buffer-size = 8192
 
 # uWSGI serves the static files and in settings.yml we use::
 #