Bump version to 4.7.5 #310

Job	Run time
Wait-for-package-building	1m 5s
Wait-for-package-building	8s
Test-install-rpm-systems	0s
Test-install-rpm-systems (oraclelinux:9, x86_64, agent)	23s
Test-install-rpm-systems (oraclelinux:9, x86_64, manager)	48s
Test-install-rpm-systems (almalinux:9, x86_64, agent)	19s
Test-install-rpm-systems (almalinux:9, x86_64, manager)	39s
Test-install-rpm-systems (rockylinux:9, x86_64, agent)	13s
Test-install-rpm-systems (rockylinux:9, x86_64, manager)	39s
Test-install-rpm-systems (centos:7, x86_64, agent)	14s
Test-install-rpm-systems (centos:7, x86_64, manager)	41s
Test-install-rpm-systems (centos:8, x86_64, agent)	16s
Test-install-rpm-systems (centos:8, x86_64, manager)	37s
Test-install-rpm-systems (i386/centos:7, i386, agent)	14s
Test-install-rpm-systems (redhat/ubi8:latest, x86_64, agent)	17s
Test-install-rpm-systems (redhat/ubi8:latest, x86_64, manager)	37s
Test-install-rpm-systems (redhat/ubi9:latest, x86_64, agent)	18s
Test-install-rpm-systems (redhat/ubi9:latest, x86_64, manager)	37s
Test-install-rpm-systems (amazonlinux:2, x86_64, agent)	16s
Test-install-rpm-systems (amazonlinux:2, x86_64, manager)	35s
Test-install-rpm-systems (fedora:34, x86_64, agent)	44s
Test-install-rpm-systems (fedora:34, x86_64, manager)	1m 5s
Test-install-rpm-systems (centos:6.9, x86_64, initd, agent)	17s
	11m 2s

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