Bump com.guardsquare:proguard-core from 9.1.1 to 9.1.2

Bumps [com.guardsquare:proguard-core](https://github.com/Guardsquare/proguard-core) from 9.1.1 to 9.1.2.
- [Release notes](https://github.com/Guardsquare/proguard-core/releases)
- [Commits](Guardsquare/proguard-core@v9.1.1...v9.1.2)

---
updated-dependencies:
- dependency-name: com.guardsquare:proguard-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle.kts

@@ -19,7 +19,7 @@ dependencies {
 
     // Transformers
     implementation("org.ow2.asm:asm:9.6")
-    implementation("com.guardsquare:proguard-core:9.1.1")
+    implementation("com.guardsquare:proguard-core:9.1.2")
     implementation("net.bytebuddy:byte-buddy:1.14.12")
     implementation("org.jetbrains.kotlinx:kotlinx-metadata-jvm:0.7.0")