Release version 0.42.3

[mackerelbot]

• Bump golang.org/x/text from 0.3.7 to 0.4.0 Bump golang.org/x/text from 0.3.7 to 0.4.0 #658
• Bump github.com/aws/aws-sdk-go from 1.44.56 to 1.44.116 Bump github.com/aws/aws-sdk-go from 1.44.56 to 1.44.116 #656
• Bump github.com/fsouza/go-dockerclient from 1.8.3 to 1.9.0 Bump github.com/fsouza/go-dockerclient from 1.8.3 to 1.9.0 #655
• use Go 1.19 on build use Go 1.19 on build #654
• Bump github.com/shirou/gopsutil/v3 from 3.22.2 to 3.22.9 Bump github.com/shirou/gopsutil/v3 from 3.22.2 to 3.22.9 #652
• Bump github.com/lib/pq from 1.10.6 to 1.10.7 Bump github.com/lib/pq from 1.10.6 to 1.10.7 #648
• Bump github.com/mackerelio/checkers from 0.0.3 to 0.0.4 Bump github.com/mackerelio/checkers from 0.0.3 to 0.0.4 #645
• [uptime] rewite to testable and add test [uptime] rewite to testable and add test #643
• go.mod from 1.16 to 1.18 go.mod from 1.16 to 1.18 #642
• added test check-file-age added test check-file-age #641
• added test check-file-size added test check-file-size #640
• Bump github.com/mackerelio/go-osstat from 0.2.2 to 0.2.3 Bump github.com/mackerelio/go-osstat from 0.2.2 to 0.2.3 #638
• Bump github.com/fsouza/go-dockerclient from 1.8.1 to 1.8.3 Bump github.com/fsouza/go-dockerclient from 1.8.1 to 1.8.3 #637
• Bump github.com/go-ldap/ldap/v3 from 3.4.3 to 3.4.4 Bump github.com/go-ldap/ldap/v3 from 3.4.3 to 3.4.4 #631
• Improve tests for check-mysql Improve tests for check-mysql #629