chore(ci): disable forge & neoforge for 1.21.9 for now

Forge at the time of writing does not have a public release, and
NeoForge has breaking changes to their fancymodloader, which
requires more work to get updated. So, I'm disabling Forge and
NeoForge from building on api-17 for now.

This will allow SpongeVanilla to build for 1.21.9

Author: gabizou

.github/workflows/common-run-build.yaml

@@ -16,15 +16,15 @@ jobs:
       matrix:
         project:
           - vanilla
-          - forge
-          - neoforge
+#          - forge
+#          - neoforge
         include:
           - project: vanilla
             gradleProject: SpongeVanilla
-          - project: forge
-            gradleProject: SpongeForge
-          - project: neoforge
-            gradleProject: SpongeNeo
+#          - project: forge
+#            gradleProject: SpongeForge
+#          - project: neoforge
+#            gradleProject: SpongeNeo
     steps:
       - name: setup
         id: setup