use ubuntu-slim runner for small tasks

.github/workflows/post-publish.yml

@@ -11,7 +11,7 @@ jobs:
       version: ${{ github.event.release.tag_name }}
 
   notify:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - name: Notify about DEB build
         uses: rtCamp/action-slack-notify@e31e87e03dd19038e411e38ae27cbad084a90661 # v2.3.3
@@ -40,7 +40,7 @@ jobs:
 
   get-asset-urls:
     name: Get release asset URLs
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     outputs:
       is-windows-release: ${{ steps.urls.outputs.urls-present }}
       msi-url: ${{ steps.urls.outputs.msi }}
@@ -81,7 +81,7 @@ jobs:
     name: Notify for winget-release
     if: needs.get-asset-urls.outputs.is-windows-release == 'true' && needs.get-version.outputs.versionType == 'stable'
     needs: [get-version, get-asset-urls]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - name: Slack Notification
         uses: rtCamp/action-slack-notify@e31e87e03dd19038e411e38ae27cbad084a90661 # v2.3.3
@@ -98,7 +98,7 @@ jobs:
 
   trigger-website-update:
     needs: [get-version]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     if: needs.get-version.outputs.versionType == 'stable'
     steps:
       - name: Start website update workflow
@@ -111,7 +111,7 @@ jobs:
 
   trigger-docs-update:
     needs: [get-version, get-asset-urls]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     if: needs.get-asset-urls.outputs.is-windows-release == 'true' && needs.get-version.outputs.versionType == 'stable'
     steps:
       - name: Start docs update workflow