Fix self-hosted runner tags

Author: pcj

.github/workflows/ci.yaml

@@ -14,7 +14,7 @@ concurrency:
 
 jobs:
   test:
-    runs-on: [self-hosted, Linux, X64]
+    runs-on: [self-hosted, linux, x64]
     steps:
       - uses: actions/checkout@v4
       - uses: bazel-contrib/[email protected]