Do not release Ubuntu 20.04

Author: treydock

.github/workflows/release.yaml

@@ -14,7 +14,6 @@ jobs:
           - el8
           - el9
           - amzn2023
-          - ubuntu-20.04
           - ubuntu-22.04
           - ubuntu-24.04
           - debian-12
@@ -25,8 +24,6 @@ jobs:
         exclude:
           - dist: amzn2023
             arch: ppc64le
-          - dist: ubuntu-20.04
-            arch: ppc64le
           - dist: ubuntu-22.04
             arch: ppc64le
           - dist: ubuntu-24.04