build: bump version number to 13.7.0 #2362

Job	Run time
build (ubuntu-latest)	3m 21s
java_matrix	3s
download_test_data	4s
build (macos-latest)	4m 27s
unit_tests (21)	3m 50s
unit_tests (25)	3m 34s
generate_documentation	54s
test_clara	4m 6s
test_decoder	2m 50s
spotbugs	6m 25s
test_run-groovy	34s
test_coatjava (ubuntu-latest, kpp)	3m 14s
dependency_analysis	1m 15s
test_coatjava (ubuntu-latest, eb-eftpi)	1m 54s
test_coatjava (ubuntu-latest, eb-enc)	2m 17s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	4m 26s
test_coatjava (ubuntu-latest, eb-eg)	1m 56s
test_coatjava (ubuntu-latest, eb-epc)	2m 21s
test_coatjava (ubuntu-latest, eb-ep)	2m 9s
release_build	0s
deploy_web_pages	0s
final	4s
	49m 44s

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