fix: forget to check cache hits

Author: sysnote8main

.github/workflows/build.yml

@@ -38,6 +38,7 @@ jobs:
 
       - name: Cache .m2 directory
         uses: actions/cache@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+        id: cache
         with:
           path: ~/.m2
           key: m2-cache
@@ -48,6 +49,7 @@ jobs:
         uses: gradle/actions/setup-gradle@4d9f0ba0025fe599b4ebab900eb7f3a1d93ef4c2 # v5.0.0
 
       - name: Setup BuildTools
+        if: steps.cache.outputs.cache-hit != 'true'
         run: |
           wget "https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar"
           java -jar BuildTools.jar --rev 1.14.4