Update git config to github actions bot in release workflow

Author: prvashisht

.github/workflows/release-extension.yaml

@@ -66,8 +66,8 @@ jobs:
     - name: Get changes since last release
       id: get_changes
       run: |
-        git config --global user.name 'Pratyush Vashisht'
-        git config --global user.email 'developer@pratyushvashisht.com'
+        git config --global user.name 'github-actions[bot]'
+        git config --global user.email '41898282+github-actions[bot]@users.noreply.github.com'
         PREV_TAG=$(git describe --tags --abbrev=0)
         CHANGELOG=$(git log $PREV_TAG..HEAD --merges --pretty=format:"%b" | sed ':a;N;$!ba;s/\n/\\n/g')
         echo "CHANGELOG=${CHANGELOG}" >> $GITHUB_ENV