build(deps): bump github.com/apolloconfig/agollo/v4 (#2421)

Bumps [github.com/apolloconfig/agollo/v4](https://github.com/apolloconfig/agollo) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/apolloconfig/agollo/releases)
- [Commits](https://github.com/apolloconfig/agollo/compare/v4.2.0...v4.2.1)

---
updated-dependencies:
- dependency-name: github.com/apolloconfig/agollo/v4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

contrib/config/apollo/go.mod

@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/config/apollo/v2
 go 1.16
 
 require (
-	github.com/apolloconfig/agollo/v4 v4.2.0
+	github.com/apolloconfig/agollo/v4 v4.2.1
 	github.com/go-kratos/kratos/v2 v2.4.0
 )
 

contrib/config/apollo/go.sum

@@ -63,8 +63,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuy
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/apolloconfig/agollo/v4 v4.2.0 h1:FkE8acffsUhnRnjyi37eOq6JpfUhQKuNccG2jXB3Mco=
-github.com/apolloconfig/agollo/v4 v4.2.0/go.mod h1:SuvTjtg0p4UlSzSbik+ibLRr6oR1xRsfy65QzP3GEAs=
+github.com/apolloconfig/agollo/v4 v4.2.1 h1:+cTdSZbWfLLZpEQk2LEhSbkmjLH+rzyAAPb6buhPA+Q=
+github.com/apolloconfig/agollo/v4 v4.2.1/go.mod h1:SuvTjtg0p4UlSzSbik+ibLRr6oR1xRsfy65QzP3GEAs=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=