Add Bluesky share link to message added by github action bot when merging

[Roshanjossey]

🎯 Goal

Get more reach and backlinks by making it easy for users to share first contributions in Bluesky

💡 Possible solutions

Add Bluesky sharing to existing sharing options.
You can find the relevant code in https://github.com/firstcontributions/first-contributions/blob/main/.github/workflows/auto-pr-merge.yml#L656

Relevant documentation in https://docs.bsky.app/docs/advanced-guides/intent-links

📋 Steps to solve the problem

• Comment below about what you've started working on.
• Add, commit, push your changes.
• Submit a pull request and add this in comments - Addresses #<put issue number here>
• Ask for reviews in comments section of pull request.
• Celebrate your contribution to this project. 🎉

[shashankdangi]

Hey , I have made these Changed to the code . Please Review them

[Rounak0001]

I fixed it and raise the pull request (request link: #91685)

[nazifrp]

Starting telegram

[Adventurist2]

Addresses #91497
(Request link to my PR : #92235)
I added the Bluesky sharing feature , Please have a look at my PR