⬆️ Updates ubuntu to v24

Author: renovate[bot]

.github/workflows/backport.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   backport:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-24.04
     name: Backport
     steps:
       - name: Backport

.github/workflows/closing.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   issueClosed:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Add closed question comment
         uses: peter-evans/create-or-update-comment@v1

.github/workflows/main.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-24.04
     name: Generate chart image
     steps:
       - uses: actions/checkout@v2