github: add gcc-14 and clang-18/clang-17/clang-16 jobs

These jobs explicitly use ubuntu-24.04 because ubuntu-latest still
points to ubuntu-22.04 where these compilers are not available.

.github/workflows/ci.yml

@@ -10,6 +10,20 @@ jobs:
     - name: check
       run: git diff-index --check --cached 4b825dc642cb6eb9a060e54bf8d69288fbee4904
 
+  gcc14-x86_64:
+    runs-on: ubuntu-24.04
+    env:
+      CC: gcc-14
+      TARGET: x86_64
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: install dependencies
+      run: ci/install-dependencies.sh
+    - name: build check
+      run: ci/run-build-and-tests.sh
+
   gcc13-x86_64:
     runs-on: ubuntu-latest
     env:
@@ -94,6 +108,48 @@ jobs:
     - name: build check
       run: ci/run-build-and-tests.sh
 
+  clang18-x86_64:
+    runs-on: ubuntu-24.04
+    env:
+      CC: clang-18
+      TARGET: x86_64
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: install dependencies
+      run: ci/install-dependencies.sh
+    - name: build check
+      run: ci/run-build-and-tests.sh
+
+  clang17-x86_64:
+    runs-on: ubuntu-24.04
+    env:
+      CC: clang-17
+      TARGET: x86_64
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: install dependencies
+      run: ci/install-dependencies.sh
+    - name: build check
+      run: ci/run-build-and-tests.sh
+
+  clang16-x86_64:
+    runs-on: ubuntu-24.04
+    env:
+      CC: clang-16
+      TARGET: x86_64
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: install dependencies
+      run: ci/install-dependencies.sh
+    - name: build check
+      run: ci/run-build-and-tests.sh
+
   clang15-x86_64:
     runs-on: ubuntu-latest
     env: