read_image_version assigns only a single sigit for the patch version

Steps to Reproduce

1. Have installed an overleaf image with patch version greater then 9 (ex. 3.5.13)
2. Use a script to run the function read_image_version from lib/shared-functions.sh
3. Read the $IMAGE_VERSION_PATCH variable
   Example code : (the file must be in the toolkit root to work)

#!/bin/bash       
TOOLKIT_ROOT="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
source lib/shared-functions.sh      
sudo echo 3.5.13 | sudo tee config/version
read_image_version
echo "$IMAGE_VERSION_MAJOR.$IMAGE_VERSION_MINOR.$IMAGE_VERSION_PATCH"

Expected Behaviour

The variable IMAGE_VERSION_PATCH should be the whole number (ex. 13) and not only the last digit (ex. 3)

Observed Behaviour

The variable $IMAGE_VERSION_PATCH contains only the last digit (ex.3)

Context

I was creating a script to automate my upgrade from overleaf version 3.0.1 to the latest (5.2.1).
While doing that i used shared-functions.sh to access it's functions and i needed to check the image version before upgrading to version 4.0.1 (needs image version > 3.5.10)

Technical Info

This is using the latest version of the toolkit

• Operating System and version (desktop or mobile): Ubuntu server 20.04
• Project and/or file: lib/shared-functions.sh

Analysis:

The problem is that the regex used in read_image_version is wrong.
Current regex: ^([0-9]+)\.([0-9]+)\.([0-9])+(-RC[0-9]*)?(-with-texlive-full)?$
Right regex: ^([0-9]+)\.([0-9]+)\.([0-9]+)+(-RC[0-9]*)?(-with-texlive-full)?$
The only difference is the + after the third number's regex.
You can test the regex only using websites like: https://regex101.com/

Inspect read_image_version in lib/shared-functions.sh, then run the provided reproduction script with config/version set to 3.5.13. Verify that IMAGE_VERSION_PATCH contains the complete patch number, including both digits, while the other version components and supported suffixes still parse correctly.