ci: use latest ubuntu container
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5c4ece5..532485f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@
 jobs:
   release:
     name: Release
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout Entire Repository
         uses: actions/checkout@v2