Change CI runner to ubuntu-latest

Author: intel352

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ on:
     branches: [main, master]
 jobs:
   test:
-    runs-on: [self-hosted, Linux, X64]
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
@@ -20,7 +20,7 @@ jobs:
 
   strict-contracts:
     name: Validate strict plugin contracts
-    runs-on: [self-hosted, Linux, X64]
+    runs-on: ubuntu-latest
     permissions:
       contents: read
     steps: