Fix runner labels: use ubuntu-latest instead of [linux, x64, docker:dind]

.forgejo/workflows/build-packages.yml

@@ -16,7 +16,7 @@ env:
 jobs:
   build-libostree-backport:
     name: Build libostree Backport
-    runs-on: [linux, x64, docker:dind]
+    runs-on: ubuntu-latest
     container:
       image: ubuntu:latest
     steps:
@@ -75,7 +75,7 @@ jobs:
 
   build-bootc:
     name: Build bootc Package
-    runs-on: [linux, x64, docker:dind]
+    runs-on: ubuntu-latest
     container:
       image: ubuntu:latest
     needs: build-libostree-backport
@@ -128,7 +128,7 @@ jobs:
 
   create-artifacts:
     name: Create Combined Artifacts
-    runs-on: [linux, x64, docker:dind]
+    runs-on: ubuntu-latest
     container:
       image: ubuntu:latest
     needs: [build-libostree-backport, build-bootc]

.forgejo/workflows/test-build.yml

@@ -13,7 +13,7 @@ env:
 jobs:
   test-bootc-build:
     name: Test bootc Build (with existing libostree)
-    runs-on: [linux, x64, docker:dind]
+    runs-on: ubuntu-latest
     container:
       image: ubuntu:latest
     steps:

.forgejo/workflows/update-readme.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   update-readme:
     name: Update README with Artifact Links
-    runs-on: [linux, x64, docker:dind]
+    runs-on: ubuntu-latest
     container:
       image: ubuntu:latest
     if: ${{ github.event.workflow_run.conclusion == 'success' }}