Merge pull request #12 from PerMac/workPlan

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Author: PerMac

Diff for: .github/workflows/twister.yaml

@@ -19,8 +19,7 @@ concurrency:
 
 jobs:
   twister-build-prep:
-    if: github.repository_owner == 'zephyrproject-rtos'
-    runs-on: zephyr-runner-linux-x64-4xlarge
+    runs-on: ubuntu-latest
     container:
       image: ghcr.io/zephyrproject-rtos/ci:v0.26.4
       options: '--entrypoint /bin/bash'
@@ -116,7 +115,7 @@ jobs:
           echo "fullrun=${TWISTER_FULL}" >> $GITHUB_OUTPUT
 
   twister-build:
-    runs-on: zephyr-runner-linux-x64-4xlarge
+    runs-on: ubuntu-latest
     needs: twister-build-prep
     if: needs.twister-build-prep.outputs.size != 0
     container: