Bump cygwin/cygwin-install-action

Bumps [cygwin/cygwin-install-action](https://github.com/cygwin/cygwin-install-action) from d8ee2d1406e34ad7975bb7d7060160277a4bd6b2 to 76d6ed8c4ea1e38d30b3dae9662bd3e7e8379cb4.
- [Release notes](https://github.com/cygwin/cygwin-install-action/releases)
- [Commits](cygwin/cygwin-install-action@d8ee2d1...76d6ed8)

---
updated-dependencies:
- dependency-name: cygwin/cygwin-install-action
  dependency-version: 76d6ed8c4ea1e38d30b3dae9662bd3e7e8379cb4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/run.yml

@@ -26,7 +26,7 @@ jobs:
 
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v5.0.0
 
-      - uses: cygwin/cygwin-install-action@d8ee2d1406e34ad7975bb7d7060160277a4bd6b2 # master
+      - uses: cygwin/cygwin-install-action@76d6ed8c4ea1e38d30b3dae9662bd3e7e8379cb4 # master
 
       - name: Install Subversion (SVN) on Windows
         run: |