ci(build): support Ubuntu 26.04 (#25836)

Co-authored-by: Kitzunu <24550914+Kitzunu@users.noreply.github.com>
Co-authored-by: sudlud <sudlud@users.noreply.github.com>

.github/workflows/core-build-nopch.yml

@@ -30,10 +30,6 @@ jobs:
       fail-fast: true
       matrix:
         include:
-          - os: ubuntu-22.04
-            compiler:
-              CC: clang-15
-              CXX: clang++-15
           - os: ubuntu-24.04
             compiler:
               CC: clang-18
@@ -42,6 +38,10 @@ jobs:
             compiler:
               CC: gcc-14
               CXX: g++-14
+          - os: ubuntu-26.04
+            compiler:
+              CC: clang-20
+              CXX: clang++-20
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }}-${{ matrix.compiler.CC }}-nopch
     if: github.repository == 'azerothcore/azerothcore-wotlk' && !github.event.pull_request.draft

.github/workflows/core-build-pch.yml

@@ -30,14 +30,14 @@ jobs:
       fail-fast: true
       matrix:
         include:
-          - os: ubuntu-22.04
-            compiler:
-              CC: clang-15
-              CXX: clang++-15
           - os: ubuntu-24.04
             compiler:
               CC: clang-18
               CXX: clang++-18
+          - os: ubuntu-26.04
+            compiler:
+              CC: clang-20
+              CXX: clang++-20
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }}-${{ matrix.compiler.CC }}-pch
     if: github.repository == 'azerothcore/azerothcore-wotlk' && !github.event.pull_request.draft

.github/workflows/dashboard-ci.yml

@@ -41,8 +41,8 @@ jobs:
       fail-fast: true
       matrix:
         include:
-          - os: ubuntu-22.04
           - os: ubuntu-24.04
+          - os: ubuntu-26.04
     runs-on: ${{ matrix.os }}
     if: github.repository == 'azerothcore/azerothcore-wotlk' && !github.event.pull_request.draft
     steps:
@@ -73,8 +73,8 @@ jobs:
       fail-fast: true
       matrix:
         include:
-          - os: ubuntu-22.04
           - os: ubuntu-24.04
+          - os: ubuntu-26.04
     runs-on: ${{ matrix.os }}
     if: github.repository == 'azerothcore/azerothcore-wotlk' && !github.event.pull_request.draft
     steps: