ci: enable and configure Dependabot

Part of #1590

Author: php-coder

.github/dependabot.yml

@@ -0,0 +1,22 @@
+# See for details:
+# - https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuring-dependabot-version-updates
+# - https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+version: 2
+updates:
+
+  - package-ecosystem: "maven"
+    directory: "/"
+    # https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#allow
+    allow:
+      - dependency-name: "org.jsoup:jsoup"
+    # https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#scheduleinterval
+    schedule:
+      interval: "daily"
+      time: "08:00"
+      timezone: "Asia/Novosibirsk"
+    # https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#commit-message
+    commit-message:
+      prefix: "chore"
+    assignees: [ "php-coder" ]
+    reviewers: [ "php-coder" ]
+    labels: [ "kind/dependency-update" ]