Fix CI (#4)

* linux.yml: Fix compilation with Clang 17

* linux.yml: Add compilation with Clang 18

* linux.yml: Drop compilation with GCC 11, Clang 15, Clang 16

* Actions(deps): Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: hartwork

.github/workflows/linux.yml

@@ -17,29 +17,19 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - cc: gcc-11
-            cxx: g++-11
-            clang_major_version: null
-            clang_repo_suffix: null
-            runs-on: ubuntu-22.04
           - cc: gcc-12
             cxx: g++-12
             clang_major_version: null
             clang_repo_suffix: null
             runs-on: ubuntu-22.04
-          - cc: clang-15
-            cxx: clang++-15
-            clang_major_version: 15
-            clang_repo_suffix: -15
-            runs-on: ubuntu-22.04
-          - cc: clang-16
-            cxx: clang++-16
-            clang_major_version: 16
-            clang_repo_suffix: -16
-            runs-on: ubuntu-22.04
           - cc: clang-17
             cxx: clang++-17
             clang_major_version: 17
+            clang_repo_suffix: -17
+            runs-on: ubuntu-22.04
+          - cc: clang-18
+            cxx: clang++-18
+            clang_major_version: 18
             clang_repo_suffix:
             runs-on: ubuntu-22.04
     steps:
@@ -67,7 +57,7 @@ jobs:
               clang-${{ matrix.clang_major_version }}
 
       - name: Checkout Git branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: 'Configure with CMake'
         run: |-