Use ubuntu-latest for all workflows

Author: theCalcaholic

.github/workflows/build-lxd.yml

@@ -47,7 +47,7 @@ jobs:
             echo "lxd_extra_profile=network" | tee -a "$GITHUB_OUTPUT"
           else
             LXC_CMD="incus"
-            RUNNER_LABEL="ubuntu-20.04"
+            RUNNER_LABEL="ubuntu-latest"
           fi
 
           echo "runner_label=$RUNNER_LABEL" | tee -a $GITHUB_OUTPUT

.github/workflows/build-sd-images.yml

@@ -23,7 +23,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     env:
       VERSION: "${{ inputs.git_ref }}"
       LOG_GUEST: "\\033[1;34mGUEST::\\033[0m"
@@ -336,7 +336,7 @@ jobs:
           }
 
 #  test-distupgrade:
-#    runs-on: ubuntu-20.04
+#    runs-on: ubuntu-latest
 #    env:
 #      VERSION: "${{ inputs.git_ref || github.ref }}"
 #      LOG_GUEST: "\\033[1;34mGUEST::\\033[0m"