Build(deps): bump msys2/setup-msys2 from 2 to 2.31.0

Bumps [msys2/setup-msys2](https://github.com/msys2/setup-msys2) from 2 to 2.31.0.
- [Release notes](https://github.com/msys2/setup-msys2/releases)
- [Changelog](https://github.com/msys2/setup-msys2/blob/main/CHANGELOG.md)
- [Commits](msys2/setup-msys2@v2...v2.31.0)

---
updated-dependencies:
- dependency-name: msys2/setup-msys2
  dependency-version: 2.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -113,7 +113,7 @@ jobs:
     # we need in addition to the standard UCRT paths, /c/ProgramData/chocolatey/bin and
     # /c/windows/system32.
     # See https://github.com/msys2/setup-msys2
-    - uses: msys2/setup-msys2@v2
+    - uses: msys2/setup-msys2@v2.31.0
       with:
         msystem: UCRT64
         update: true

.github/workflows/release.yml

@@ -145,7 +145,7 @@ jobs:
 
     # We need path-type of inherit to include the protoc compiler on the $PATH.
     # See https://github.com/msys2/setup-msys2
-    - uses: msys2/setup-msys2@v2
+    - uses: msys2/setup-msys2@v2.31.0
       with:
         msystem: UCRT64
         update: true