Bump to clang-format-20

Author: pgrete

.github/workflows/apply-formatting.yml

@@ -11,5 +11,5 @@ jobs:
     - uses: pgrete/cpp-py-formatter/command@v0.4.0
       with:
         botName: par-hermes
-        clangFormatVersion: 18
+        clangFormatVersion: 20
         token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/check-formatting.yml

@@ -7,5 +7,5 @@ jobs:
     steps:
     - uses: pgrete/cpp-py-formatter/check@v0.4.0
       with:
-        clangFormatVersion: 18
+        clangFormatVersion: 20
         token: ${{ secrets.GITHUB_TOKEN }}

CHANGELOG.md

@@ -26,7 +26,7 @@ by adding an optional string as last argument to any `ParameterInput` `Get` or `
 ### Fixed (not changing behavior/API/variables/...)
 
 ### Infrastructure
-- [[PR 156]](https://github.com/parthenon-hpc-lab/athenapk/pull/156) Bump formatters to clang-format-18 and black 25.12
+- [[PR 156]](https://github.com/parthenon-hpc-lab/athenapk/pull/156) Bump formatters to clang-format-20 and black 25.12
 - [[PR 146]](https://github.com/parthenon-hpc-lab/athenapk/pull/146) Bump Parthenon 25.12 and Kokkos 4.7.02
 
 ### Removed (removing behavior/API/varaibles/...)