Bump CI complete job to ubuntu-22.04 (#6323)

18.04 is being deprecated.

.github/workflows/osrm-backend.yml

@@ -68,12 +68,12 @@ jobs:
         ./scripts/format.sh && ./scripts/error_on_dirty.sh
         node ./scripts/validate_changelog.js
         npm run docs && ./scripts/error_on_dirty.sh
-  
+
   docker-image:
     needs: format-taginfo-docs
     runs-on: ubuntu-22.04
     continue-on-error: false
-    steps:       
+    steps:
       - name: Check out the repo
         uses: actions/checkout@v3
       - name: Enable osm.pbf cache
@@ -85,7 +85,7 @@ jobs:
             v1-berlin-osm-pbf
       - name: Docker build
         run: |
-          docker build -t osrm-backend-local -f docker/Dockerfile . 
+          docker build -t osrm-backend-local -f docker/Dockerfile .
       - name: Test Docker image
         run: |
           if [ ! -f "${PWD}/berlin-latest.osm.pbf" ]; then
@@ -428,7 +428,7 @@ jobs:
       CXXCOMPILER: ${{ matrix.CXXCOMPILER }}
       CXXFLAGS: ${{ matrix.CXXFLAGS }}
       ENABLE_ASSERTIONS: ${{ matrix.ENABLE_ASSERTIONS }}
-      ENABLE_CLANG_TIDY: ${{ matrix.ENABLE_CLANG_TIDY }} 
+      ENABLE_CLANG_TIDY: ${{ matrix.ENABLE_CLANG_TIDY }}
       ENABLE_COVERAGE: ${{ matrix.ENABLE_COVERAGE }}
       ENABLE_GLIBC_WORKAROUND: ${{ matrix.ENABLE_GLIBC_WORKAROUND }}
       ENABLE_CONAN: ${{ matrix.ENABLE_CONAN }}
@@ -659,7 +659,7 @@ jobs:
         token: ${{ secrets.GITHUB_TOKEN }}
 
   ci-complete:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     needs: [build-test-publish, docker-image, windows]
     steps:
     - run: echo "CI complete"