fix(deps): update dependency com.mebigfatguy.fb-contrib:fb-contrib to v7.6.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.mebigfatguy.fb-contrib:fb-contrib (source)	7.6.5 -> 7.6.8

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Release Notes

mebigfatguy/fb-contrib (com.mebigfatguy.fb-contrib:fb-contrib)

### [`v7.6.7`](https://redirect.github.com/mebigfatguy/fb-contrib/compare/v7.6.6...v7.6.7)

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Configuration

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[github-actions[bot]]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/4445-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[bot]]

Codacy

Lint

Type	master	PR
Warnings	94	152
Errors	132	88

SpotBugs

Category	Base	New
Bad practice	6	6
Correctness	16	16
Dodgy code	74	74
Internationalization	3	3
Malicious code vulnerability	3	3
Performance	5	5
Security	1	1
Total	108	108

Lint increased!