Bump cygwin/cygwin-install-action (#1279)

Bumps [cygwin/cygwin-install-action](https://github.com/cygwin/cygwin-install-action) from 781ea34f8c7c28e794b807fb7120e93bfdac3089 to a3d72946b163026bbd0fa9a88379ccbda4bd86bb.
- [Release notes](https://github.com/cygwin/cygwin-install-action/releases)
- [Commits](cygwin/cygwin-install-action@781ea34...a3d7294)

---
updated-dependencies:
- dependency-name: cygwin/cygwin-install-action
  dependency-version: a3d72946b163026bbd0fa9a88379ccbda4bd86bb
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/run.yml

@@ -33,7 +33,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: cygwin/cygwin-install-action@781ea34f8c7c28e794b807fb7120e93bfdac3089 # master
+      - uses: cygwin/cygwin-install-action@a3d72946b163026bbd0fa9a88379ccbda4bd86bb # master
 
       - name: Install Subversion (SVN) on Windows
         run: |