Add changelog infos for 17.1.0 and 17.1.2

[mahibi]

17.1.1 was skipped as it's not released on gplay, for reason see #3397

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔖 Capability is checked or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/3398-talk.apk



To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud Talk app.

[github-actions]

Codacy

Lint

Type	master	PR
Warnings	89	89
Errors	0	0

SpotBugs

Category	Base	New
Bad practice	18	18
Correctness	10	10
Dodgy code	123	123
Internationalization	5	5
Malicious code vulnerability	3	3
Performance	8	8
Security	2	2
Total	169	169