Use ubuntu-latest

It's better to use ubuntu-latest to track current LTS provided by github, instead of having to manually update it.
It also makes more sense to stick to the current LTS than trying to support the older one.

Signed-off-by: Nick Kossifidis <[email protected]>

Author: mickflemm

.github/workflows/build.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os:     [ubuntu-22.04, ubuntu-24.04]
+        os:     [ubuntu-latest]
         mode:   [newlib, linux, musl, uclibc]
         target: [rv32gc-ilp32d, rv64gc-lp64d]
         compiler: [gcc, llvm]
@@ -50,8 +50,7 @@ jobs:
 
       - name: make report
         if: |
-          matrix.os == 'ubuntu-24.04'
-          && (matrix.mode == 'linux' || matrix.mode == 'newlib')
+          (matrix.mode == 'linux' || matrix.mode == 'newlib')
           && matrix.compiler == 'gcc'
         run: |
           sudo make report-${{ matrix.mode }} -j $(nproc)
@@ -90,7 +89,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os:     [ubuntu-24.04]
+        os:     [ubuntu-latest]
         mode:   [newlib]
         target: [rv64gc-lp64d]
         sim:    [spike]
@@ -123,7 +122,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os:     [ubuntu-24.04]
+        os:     [ubuntu-latest]
         mode:   [newlib, linux]
         target: [rv64gc-lp64d]
     steps: