fix(deps): update nextra monorepo to v2.13.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nextra	2.13.0 -> 2.13.1
nextra-theme-docs	2.13.0 -> 2.13.1

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Release Notes

shuding/nextra (nextra)

### [`v2.13.1`](https://togithub.com/shuding/nextra/releases/tag/nextra%402.13.1) [Compare Source](https://togithub.com/shuding/nextra/compare/nextra@2.13.0...nextra@2.13.1) ##### Patch Changes - [`ee02a48`](https://togithub.com/shuding/nextra/commit/ee02a483): fix `Property 'existsSync' does not exist on type`

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Name	Status	Preview	Comments	Updated (UTC)
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[perfsee[bot]]

napi-rs-website

Bundle main

diff ------------------- Bundle Size Diff -------------------------

@@                       EntryPoint: main                        @@
##                       main …xtra-monorepo                 +/- ##
===================================================================
< Bundle              33.9 MB        33.9 MB       +25 B(+0.00%)   
< Initial JS           2.5 MB         2.5 MB       +25 B(+0.00%)   
= Initial CSS         69.3 kB        69.3 kB                       
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
= Assets                   79             79                       
= Chunks                   67             67                       
= Packages                 36             36                       
= Duplicates                0              0                       
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Warnings ~~~~~~~~~~~~~~~~~~~~~~~~~~~#
! Separate mixed content assets files                              

@@                    EntryPoint: pages/_app                     @@
##                       main …xtra-monorepo                 +/- ##
===================================================================
< Bundle              33.7 MB        33.7 MB       +25 B(+0.00%)   
< Initial JS          2.37 MB        2.37 MB       +25 B(+0.00%)   
= Initial CSS         69.3 kB        69.3 kB                       
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
= Assets                   77             77                       
= Chunks                   65             65                       
= Packages                 35             35                       
= Duplicates                0              0                       
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Warnings ~~~~~~~~~~~~~~~~~~~~~~~~~~~#
! Separate mixed content assets files                              

@@                   EntryPoint: pages/_error                    @@
##                       main …xtra-monorepo                 +/- ##
===================================================================
= Bundle                250 B          250 B                       
= Initial JS            250 B          250 B                       
= Initial CSS             0 B            0 B                       
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
= Assets                    1              1                       
= Chunks                    1              1                       
= Packages                  1              1                       
= Duplicates                0              0                       

...and more