Update dependency ubuntu to v24 (#704)

* Update dependency ubuntu to v24

| datasource     | package | from  | to    |
| -------------- | ------- | ----- | ----- |
| github-runners | ubuntu  | 20.04 | 24.04 |
| docker         | ubuntu  | 20.04 | noble |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

* Discard changes to .circleci/config.yml

---------

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Luca Comellini <luca.com@gmail.com>

.github/workflows/update-docker-images.yml

@@ -12,7 +12,7 @@ defaults:
 jobs:
   variables:
     name: Get version of base image
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     outputs:
       versions: ${{ steps.version.outputs.matrix }}
       git_tag: ${{ steps.tag.outputs.git_tag }}
@@ -44,7 +44,7 @@ jobs:
 
   check:
     name: Check if updates are needed
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     needs: variables
     outputs:
       needs-updating-debian: ${{ steps.var.outputs.debian }}
@@ -71,7 +71,7 @@ jobs:
   build-docker:
     if: ${{ needs.check.outputs.needs-updating-debian == 'true' || needs.check.outputs.needs-updating-alpine == 'true' }}
     name: Build Docker Image
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     needs: [check, variables]
     strategy:
       matrix:

Dockerfile-openresty

@@ -2,7 +2,7 @@
 # https://github.com/openresty/docker-openresty
 
 ARG RESTY_IMAGE_BASE="ubuntu"
-ARG RESTY_IMAGE_TAG="20.04"
+ARG RESTY_IMAGE_TAG="24.04"
 
 FROM ${RESTY_IMAGE_BASE}:${RESTY_IMAGE_TAG}