chore: Replace node 20 (deprecated) with node 24 in custom actions (#6475)

Author: davidkna-sap

.github/actions/changesets-fixed-version-bump/action.yml

@@ -8,5 +8,5 @@ outputs:
     description: 'The new version'
 
 runs:
-  using: 'node20'
+  using: 'node24'
   main: 'index.js'

.github/actions/check-public-api/action.yml

@@ -10,5 +10,5 @@ inputs:
     description: 'Regular expression for paths to be ignore when checking the public API.'
 
 runs:
-  using: 'node20'
+  using: 'node24'
   main: 'index.js'

.github/actions/merge-and-write-changelogs/action.yml

@@ -1,5 +1,5 @@
 name: 'Merge Changelogs'
 description: 'Merges all public changelogs from changesets into a single changelog.'
 runs:
-  using: 'node20'
+  using: 'node24'
   main: 'index.js'