Update semanticdb-scalac to 4.7.5

[scala-steward]

Updates org.scalameta:semanticdb-scalac from 4.6.0 to 4.7.5. GitHub Release Notes - Version Diff

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

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Adjust future updates

Add this to your `.scala-steward.conf` file to ignore future updates of this dependency: ``` updates.ignore = [ { groupId = "org.scalameta", artifactId = "semanticdb-scalac" } ] ``` Or, add this to slow down future updates of this dependency: ``` dependencyOverrides = [{ pullRequests = { frequency = "30 days" }, dependency = { groupId = "org.scalameta", artifactId = "semanticdb-scalac" } }] ```

labels: library-update, early-semver-minor, semver-spec-minor, version-scheme:semver-spec, commit-count:1

[xuwei-k]

• https://github.com/scala/scala-rewrites/pull/177