ci: updates aws credential task to fix node20 retirement for GHA (#14345)

CI is currently failing for python because of an outdated node20 GHA
task, this upgrades the task to move to node24
https://github.com/microsoft/semantic-kernel/actions/runs/33076766978/job/98532947231

---------

Signed-off-by: Vincent Biret <vibiret@microsoft.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: baywet

.github/workflows/python-integration-tests.yml

@@ -138,7 +138,7 @@ jobs:
       - name: Set up gcloud
         uses: google-github-actions/setup-gcloud@aa5489c8933f4cc7a4f7d45035b3b1440c9c10db # v3.0.1
       - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@61815dcd50bd041e203e49132bacad1fd04d2708 # v5.1.1
+        uses: aws-actions/configure-aws-credentials@e6de054238d6b7531b4efff3b6587d9aade6a06c # v6.2.3
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}