Update sbt to 1.9.7

[scala-steward]

About this PR

📦 Updates org.scala-sbt:sbt from 1.9.6 to 1.9.7

📜 GitHub Release Notes - Version Diff

Usage

✅ Please merge!

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

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

Configure Scala Steward for your repository with a .scala-steward.conf file.

Have a fantastic day writing Scala!

⚙ Adjust future updates

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

^{labels: library-update, early-semver-patch, semver-spec-patch, version-scheme:early-semver, commit-count:1}

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (0319209) 92.05% compared to head (2796f24) 92.10%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1062 +/- ## ========================================== + Coverage 92.05% 92.10% +0.05% ========================================== Files 93 93 Lines 9881 9881 Branches 2322 2322 ========================================== + Hits 9096 9101 +5 + Misses 785 780 -5 ``` [see 4 files with indirect coverage changes](https://app.codecov.io/gh/johnynek/bosatsu/pull/1062/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=P.+Oscar+Boykin)

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