Max Beckers

[Filesystem] rename `Filesystem::mirror()` option `copy_on_windows` to `follow_symlinks`

2

| Q | A | ------------- | --- | Branch? | 6.4 | Bug fix? | no | New feature? | no | Deprecations? | yes | Tickets | Fix...

| Q | A | ------------- | --- | Branch? | 6.4 | Bug fix? | no | New feature? | yes | Deprecations? | no | Tickets | Fix...

[Validator] BicValidator add strict mode to validate bics in strict mode

3

| Q | A | ------------- | --- | Branch? | 7.2 | Bug fix? | no | New feature? | yes | Deprecations? | no | Issues | Fix...