Bump org.codehaus.mojo:exec-maven-plugin from 3.0.0 to 3.4.0 in /lang/java #278

	#
	# Licensed to the Apache Software Foundation (ASF) under one
	# or more contributor license agreements. See the NOTICE file
	# distributed with this work for additional information
	# regarding copyright ownership. The ASF licenses this file
	# to you under the Apache License, Version 2.0 (the
	# "License"); you may not use this file except in compliance
	# with the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing,
	# software distributed under the License is distributed on an
	# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	# KIND, either express or implied. See the License for the
	# specific language governing permissions and limitations
	# under the License.
	#
	name: "Pull Request Labeler"
	on: pull_request_target

	jobs:
	triage:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/labeler@v2
	with:
	repo-token: "${{ secrets.GITHUB_TOKEN }}"
	sync-labels: true

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