Fix PHP version detection before Docker image building #1130

Job	Run time
build-go (ubuntu-latest)	14s
build-java (ubuntu-latest)	35s
build-dotnet (ubuntu-latest)	26s
build-ts (ubuntu-latest)	23s
build-python (ubuntu-latest)	21s
feature-tests-python / test	1m 23s
feature-tests-dotnet / test	1m 14s
feature-tests-go / test	2m 22s
feature-tests-java / test	2m 0s
feature-tests-ts / test	2m 3s
build-docker-images / build-go-docker-images / Build go docker image	2m 20s
build-docker-images / build-java-docker-images / Build java docker image	2m 25s
build-docker-images / build-dotnet-docker-images / Build cs docker image	1m 44s
build-docker-images / build-php-docker-images / Build php docker image	1m 13s
build-docker-images / build-python-docker-images / Build py docker image	2m 36s
build-docker-images / build-ts-docker-images / Build ts docker image	3m 7s
	24m 26s

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