Update dependency fog-core to '<= 2.6.0' (#32660) #161

Job	Run time
build (production)	1m 12s
build (test)	1m 22s
test (3.1)	5m 17s
End to End testing (3.1)	2m 38s
Libvips tests (3.1)	1m 48s
Elastic Search integration testing (3.1, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	2m 50s
test (3.2)	5m 14s
End to End testing (3.2)	2m 51s
Libvips tests (3.2)	1m 53s
Elastic Search integration testing (3.2, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	2m 57s
test (.ruby-version)	6m 6s
End to End testing (.ruby-version)	3m 11s
Libvips tests (.ruby-version)	2m 10s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	3m 27s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	3m 39s
Elastic Search integration testing (.ruby-version, opensearchproject/opensearch:2)	3m 38s
	50m 13s

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