PR/CI build update (UbiquityDotNET#13)

- Added ignore of release build action file as it will have no impact on the resulting build. (Not used for a PR/CI build)

Co-authored-by: smaillet <25911635+smaillet@users.noreply.github.com>

Author: smaillet

.github/workflows/pr-build.yml

@@ -14,6 +14,7 @@ on:
       - '**.md'
       - '**.dic'
       - 'BuildVersion.xml'
+      - 'GitHub/workflows/release-build.yml'
 
   pull_request:
     branches:
@@ -23,6 +24,7 @@ on:
       - '**.md'
       - '**.dic'
       - 'BuildVersion.xml'
+      - 'GitHub/workflows/release-build.yml'
 
 jobs:
   # see: https://github.com/EnricoMi/publish-unit-test-result-action?tab=readme-ov-file#support-fork-repositories-and-dependabot-branches