Empty list of new/enhanced/changed functions in postgis manual

[strk]

​https://postgis.net/docs/manual-dev/PostGIS_Special_Functions_Index.html lists no changes as of [86e698565bd5cf13a95fc70199f7e3d51a92c769/git]

[Sandro Santilli <strk@…>]

In f0c64c9/git:

Adapt new functions list generator XSL to DocBook 5.0

Use appropriate namespaces, fixing generation of the
list_new_functions.xsl.xml which ends up being published in
​https://postgis.net/docs/manual-dev/PostGIS_Special_Functions_Index.html

This is a follow up of acdfda8eca2c212179c16801bf07fcb3deb6f8c9

Closes #5613

[robe]

This change broke a lot of bots as far as I can tell.

Here is woodie ​https://woodie.osgeo.org/repos/30/pipeline/1498/6

[robe]

Okay I think I fixed the issue at [2c4aaa87/git]

I'll reopen if the bots are still red

[strk]

Good catch 👍 we should really add a docs testsuite

[robe]

I was about to close this out, but then noticed none of the new SFCGAL functions are showing or the topology functions in the ​https://postgis.net/docs/manual-dev/PostGIS_Special_Functions_Index.html#idm46514 (3.5) section.