Bump Scala CLI to v1.8.4 (was v1.8.3) (#23538)

https://github.com/VirtusLab/scala-cli/releases/tag/v1.8.4

Author: hamzaremmal

.github/workflows/lts-backport.yaml

@@ -16,7 +16,7 @@ jobs:
  with:
  fetch-depth: 0
  - uses: coursier/cache-action@v6
- - uses: VirtusLab/scala-cli-setup@v1.8.3
+ - uses: VirtusLab/scala-cli-setup@v1.8.4
  - run: scala-cli ./project/scripts/addToBackportingProject.scala -- ${{ github.sha }}
  env:
  GRAPHQL_API_TOKEN: ${{ secrets.GRAPHQL_API_TOKEN }}

project/Build.scala

@@ -187,7 +187,7 @@ object Build {
  val mimaPreviousLTSDottyVersion = "3.3.0"
 
  /** Version of Scala CLI to download */
- val scalaCliLauncherVersion = "1.8.3"
+ val scalaCliLauncherVersion = "1.8.4"
  /** Version of Coursier to download for initializing the local maven repo of Scala command */
  val coursierJarVersion = "2.1.24"