ci: less coverage runs

[kesselb]

Fix #10475

This PR:

• unit
• integration with redis
• integration without cache

Main:

• 2x unit (if php8.3)
• 4x integration (if mysql)

[kesselb]

https://app.codecov.io/github/nextcloud/mail/commit/33c7a97bf99ba1e2c4d3b61b1ecf7b96eb02d006/indirect-changes

[kesselb]

Iteration 1:

https://app.codecov.io/github/nextcloud/mail/commit/e57d717fbf699b390f0c457629254f8aab62ff88/indirect-changes

1x unit
1x integration without redis

-0.26%

Iteration 2:

https://app.codecov.io/github/nextcloud/mail/commit/5b37ee7b31f07300ccbb00a0bd5c2972a8bc06d9/indirect-changes

1x unit
1x integration with redis

-26.81%

Iteration 3:

https://app.codecov.io/github/nextcloud/mail/commit/d76e357b8fec30ad81ddcecfbe2153aed8f38ece/indirect-changes

1x unit
2x integration (redis, no cache)

-0.21%

Iteration 4:

https://app.codecov.io/github/nextcloud/mail/commit/33c7a97bf99ba1e2c4d3b61b1ecf7b96eb02d006/indirect-changes

Same as Iteration 3, just with a reworded commit message.

1x unit
2x integration (redis, no cache)

-0.21%

Iteration 5:

https://app.codecov.io/github/nextcloud/mail/commit/e4bb57c6688c4b09e0579895a909518c6939ab03/indirect-changes

Same as Iteration 3 and 4, just another rebase to ensure the branch is not behind.

1x unit
2x integration (redis, no cache)

-0.21%

[ChristophWurst]

GitHub provides a way to create conditional logic in expressions using binary logical operators (&& and ||). This pattern can be used to achieve similar functionality to the ternary operator (?:) found in many programming languages, while actually using only binary operators.

TIL

[kesselb]

/backport to stable5.6