Remove update-spring-boot-version workflow

Issue gh-138

.github/workflows/update-spring-boot-version.yml

@@ -1,19 +0,0 @@
-name: Update Spring Boot Version
-
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: '0 12 * * *' # Once per day at 12am UTC
-
-jobs:
-    update-spring-boot-version:
-      runs-on: ubuntu-latest
-      steps:
-        - uses: actions/checkout@v3
-        - name: Update Spring Boot Version
-          run: ./update-spring-boot-version.sh
-        - name: Extract Version
-          run: echo "MINOR_VERSION=$(cat versions.properties | grep springBootVersion | cut -d'=' -f2)" >> $GITHUB_ENV
-        - uses: stefanzweifel/git-auto-commit-action@v4
-          with:
-            commit_message: "Update Spring Boot Version to ${{ env.MINOR_VERSION }}"