Bump actions/setup-python from 5.2.0 to 5.3.0

Closes #56974

GitOrigin-RevId: 138278b
Change-Id: Ibd2a321fdd86c95caf1122ab28a0bb0427c75e9b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/392085
Reviewed-by: Alexander Thomas <[email protected]>

Author: dependabot[bot]

.github/workflows/third-party-deps-scan.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           persist-credentials: false
       - name: "setup python"
-        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
           python-version: '3.7.7' # install the python version needed
       - name: "extract deps, find commit hash, pass to osv-scanner"