fix: ubuntu image

Author: roelofvandijkO

.github/workflows/build.yml

@@ -2,7 +2,7 @@ name: CI
 on: [push]
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu:22.04@sha256:19478ce7fc2ffbce89df29fea5725a8d12e57de52eb9ea570890dc5852aac1ac
     defaults:
       run:
         shell: bash -l {0}