update go-git to avoid problems with ssh host keys (#8)

Signed-off-by: Jan Lohage <lohage@23technologies.cloud>

README.md

@@ -13,10 +13,6 @@ Moreover, you need:
 5. Knowledge about Flux, Helm and Kustomize
 
 ## Quickstart
-Make sure that your host has all github.com hosts keys in the ~/.ssh/known_hosts file:
-```shell
-ssh-keyscan github.com >> ~/.ssh/known_hosts
-```
 
 Run 23kectl
 ```shell

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/fluxcd/pkg/version v0.2.0
 	github.com/fluxcd/source-controller/api v0.32.1
 	github.com/go-git/go-billy/v5 v5.3.1
-	github.com/go-git/go-git/v5 v5.4.2
+	github.com/go-git/go-git/v5 v5.5.0
 	github.com/go-logr/logr v1.2.3
 	github.com/go-playground/validator/v10 v10.11.1
 	github.com/mitchellh/mapstructure v1.5.0
@@ -65,10 +65,8 @@ require (
 	github.com/fluxcd/pkg/ssh v0.7.0 // indirect
 	github.com/fluxcd/pkg/untar v0.2.0 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
-	github.com/gliderlabs/ssh v0.3.5 // indirect
 	github.com/go-errors/errors v1.4.2 // indirect
 	github.com/go-git/gcfg v1.5.0 // indirect
-	github.com/go-git/go-git-fixtures/v4 v4.3.1 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.20.0 // indirect
 	github.com/go-openapi/swag v0.22.3 // indirect
@@ -102,7 +100,6 @@ require (
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
 	github.com/mitchellh/copystructure v1.0.0 // indirect
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
 	github.com/mitchellh/reflectwalk v1.0.0 // indirect
 	github.com/moby/spdystream v0.2.0 // indirect
@@ -115,6 +112,7 @@ require (
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
+	github.com/pjbgf/sha1cd v0.2.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/client_golang v1.14.0 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
@@ -123,6 +121,7 @@ require (
 	github.com/russross/blackfriday v1.6.0 // indirect
 	github.com/sergi/go-diff v1.2.0 // indirect
 	github.com/shopspring/decimal v1.2.0 // indirect
+	github.com/skeema/knownhosts v1.1.0 // indirect
 	github.com/spf13/afero v1.9.2 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect