[DRE-maint] Bug#1035307: Update ruby-ruby-parser to 3.20.x

[Pirate Praveen]

Control: reassign ruby3.1
Control: affects ruby-ruby-parser

On Thu, 4 May 2023 23:12:08 +0530 Praveen Arimbrathodiyil 
<praveen at onenetbeyond.org> wrote:
 >
 >
 > On 04/05/23 11:05 pm, Praveen Arimbrathodiyil wrote:
 > >
 > >
 > > On 04/05/23 10:44 pm, Pirate Praveen wrote:
 > >> Running the tests like upstream would with ruby 3.1 installed via 
rvm,
 > >> the same errors are reproduced.
 > >>
 > >> 
https://github.com/seattlerb/ruby_parser/issues/337#issuecomment-1535023385
 > >>
 > >
 > > on bullseye with rvm installed ruby 3.0, all tests pass. Though on 
sid,
 > > rvm install 3.0 fails.
 >
 > on bullseye too, with rvm installed ruby 3.1, the failures were
 > reproduced. So we can confirm the failure is with ruby 3.1.

Since upstream confirmed the tests were passing with ruby 3.1.4 I was 
also able to get the tests passing with ruby 3.1.4 and the failure is 
only with ruby 3.1.2. Can we update ruby to 3.1.4?