update deprecated ubuntu version

Author: Eric Thieme-Garmann

.github/workflows/deploy-docs.yaml

@@ -13,7 +13,7 @@ on:
 jobs:
   test:
     name: 🚀 Deploy docs
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 

.github/workflows/test.yaml

@@ -11,7 +11,7 @@ on:
 jobs:
   lint:
     name: 🔬 Lint code
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
@@ -44,7 +44,7 @@ jobs:
 
   test:
     name: ⚡ Run tests
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4