Bug#1023965: pandas FTBFS with Python 3.11 as supported version

[Rebecca N. Palmer]

Control: block 1021984 by -1
Control: tags -1 fixed-upstream fixed-in-experimental

There's more than just those 2[0].
Some are tests that expect an error and check the message (not just the 
type), and fail because the message has been reworded - these should be 
trivial to fix.
The 2 in test_null_quote_char/test_null_byte_char don't look like this, 
but also don't look like major problems.

The ones that may need someone else's attention (because DMs can't 
upload arbitrary packages) are that Debian's parso is too old to support 
3.11 - I've filed a new bug about this.

I'm in the process of moving to pandas 1.5 (#1017809), which probably 
fixes these[1], but also breaks a few reverse dependencies[2].  Do I 
take the 'serious' tag to mean this is urgent enough to fix in 1.3?

[0] 
https://launchpadlibrarian.net/631797785/buildlog_ubuntu-lunar-amd64.pandas_1.3.5+dfsg-5build1_BUILDING.txt.gz
[1] 
https://buildd.debian.org/status/fetch.php?pkg=pandas&arch=ppc64el&ver=1.5.1%2Bdfsg-3&stamp=1668226153&raw=0 
(the lxml-not-found errors are probably because it hadn't been built in 
3.11 yet)
[2] https://qa.debian.org/excuses.php?experimental=1&package=pandas and 
maybe more because I haven't done a build test yet