Update dependency org.parchmentmc.data:parchment-1.21 to v2024.07.07 (1.21-mdg) (#124)

Co-authored-by: neoforged-renovate[bot] <174042230+neoforged-renovate[bot]@users.noreply.github.com>

Author: neoforged-renovate[bot]

gradle.properties

@@ -8,7 +8,7 @@ org.gradle.configuration-cache=true
 #read more on this at https://github.com/neoforged/ModDevGradle?tab=readme-ov-file#better-minecraft-parameter-names--javadoc-parchment
 # you can also find the latest versions at: https://parchmentmc.org/docs/getting-started
 parchment_minecraft_version=1.21
-parchment_mappings_version=2024.06.23
+parchment_mappings_version=2024.07.07
 # Environment Properties
 # You can find the latest versions here: https://projects.neoforged.net/neoforged/neoforge
 # The Minecraft version must agree with the Neo version to get a valid artifact