Bump version to 4.3.0-beta.2 (#31948) #126

Job	Run time
build (production)	2m 17s
build (test)	2m 12s
Libvips tests (3.1)	1m 47s
End to End testing (3.1)	2m 8s
Elastic Search integration testing (3.1, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	3m 15s
Libvips tests (3.2)	1m 29s
test (3.1)	5m 13s
Elastic Search integration testing (3.2, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	3m 3s
End to End testing (3.2)	2m 40s
Libvips tests (.ruby-version)	2m 18s
test (3.2)	5m 0s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	2m 28s
End to End testing (.ruby-version)	2m 56s
test (.ruby-version)	6m 21s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	3m 21s
Elastic Search integration testing (.ruby-version, opensearchproject/opensearch:2)	3m 4s
	49m 32s

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