build(deps): bump net.minecraftforge:forge

Bumps [net.minecraftforge:forge](https://github.com/MinecraftForge/MinecraftForge) from 1.20.1-47.2.0 to 1.20.6-50.1.15.
- [Commits](https://github.com/MinecraftForge/MinecraftForge/commits)

---
updated-dependencies:
- dependency-name: net.minecraftforge:forge
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle

@@ -83,7 +83,7 @@ repositories {
 }
 
 dependencies {
-    minecraft 'net.minecraftforge:forge:1.20.1-47.2.0'
+    minecraft 'net.minecraftforge:forge:1.20.6-50.1.15'
 }
 
 jar {