Bump com.terraformersmc:modmenu from 18.0.0-alpha.8 to 19.0.0-alpha.1

Bumps com.terraformersmc:modmenu from 18.0.0-alpha.8 to 19.0.0-alpha.1.

---
updated-dependencies:
- dependency-name: com.terraformersmc:modmenu
  dependency-version: 19.0.0-alpha.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ forgeEventbusValidator-version = "7.0.5"
 neoforgeVersion = "26.1.2.1-beta"
 
 # Mod dependencies
-modmenu-version = "18.0.0-alpha.8"
+modmenu-version = "19.0.0-alpha.1"
 
 fabric-loom-version = "1.16.1"
 forge-plugin-version = "[7.0.17,8)"