Upgrade Ruby to version 3.2.3

As usual, we're updating the bundler version in our Gemfile.lock so it
uses the one included in Ruby 3.2.3, and we're also updating the
`parser` gem so it supports this version.

.gitlab-ci.yml

@@ -3,7 +3,7 @@ stages:
   - lint
 
 tests:
-  image: "ruby:3.1.4"
+  image: "ruby:3.2.3"
   stage: test
   services:
     - postgres:10.10
@@ -35,7 +35,7 @@ tests:
 # PRONTO_GITLAB_API_PRIVATE_TOKEN to your repository CI/CD settings
 # giving it the value of the Personal Access Token
 linters:
-  image: "ruby:3.1.4"
+  image: "ruby:3.2.3"
   stage: lint
   cache:
     key: consul

.ruby-version

@@ -1 +1 @@
-3.1.4
+3.2.3

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.1.4-bullseye
+FROM ruby:3.2.3-bullseye
 
 ENV DEBIAN_FRONTEND noninteractive
 

Gemfile.lock

@@ -777,4 +777,4 @@ DEPENDENCIES
   wkhtmltopdf-binary (~> 0.12.6)
 
 BUNDLED WITH
-   2.3.26
+   2.4.19

README.md

@@ -35,7 +35,7 @@ You can access the main website of the project at [http://consuldemocracy.org](h
 
 **NOTE**: For more detailed instructions check the [docs](https://docs.consuldemocracy.org)
 
-Prerequisites: install git, Ruby 3.1.4, CMake, pkg-config, shared-mime-info, Node.js 18.18.2 and PostgreSQL (>=9.5).
+Prerequisites: install git, Ruby 3.2.3, CMake, pkg-config, shared-mime-info, Node.js 18.18.2 and PostgreSQL (>=9.5).
 
 ```bash
 git clone https://github.com/consuldemocracy/consuldemocracy.git

README_ES.md

@@ -34,7 +34,7 @@ Puedes acceder a la página principal del proyecto en [http://consuldemocracy.or
 
 **NOTA**: para unas instrucciones más detalladas consulta la [documentación](https://docs.consuldemocracy.org)
 
-Prerequisitos: tener instalado git, Ruby 3.1.4, CMake, pkg-config, shared-mime-info, Node.js 18.18.2 y PostgreSQL (9.5 o superior).
+Prerequisitos: tener instalado git, Ruby 3.2.3, CMake, pkg-config, shared-mime-info, Node.js 18.18.2 y PostgreSQL (9.5 o superior).
 
 ```bash
 git clone https://github.com/consuldemocracy/consuldemocracy.git