auto-bumper: Use go-git WA

Fixes "reference delta not found" error.
Based on go-git/go-git#485
see go-git/go-git#495 (comment)

Signed-off-by: Or Shoval <oshoval@redhat.com>

go.mod

@@ -67,8 +67,10 @@ require (
 	github.com/Masterminds/squirrel v1.5.3 // indirect
 	github.com/Microsoft/go-winio v0.5.0 // indirect
 	github.com/Microsoft/hcsshim v0.8.24 // indirect
+	github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7 // indirect
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
+	github.com/acomagu/bufpipe v1.0.3 // indirect
 	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210826220005-b48c857c3a0e // indirect
 	github.com/asaskevich/govalidator v0.0.0-20200907205600-7a23bdc65eef // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
@@ -100,7 +102,7 @@ require (
 	github.com/fsnotify/fsnotify v1.5.1 // indirect
 	github.com/go-errors/errors v1.0.1 // indirect
 	github.com/go-git/gcfg v1.5.0 // indirect
-	github.com/go-git/go-billy/v5 v5.1.0 // indirect
+	github.com/go-git/go-billy/v5 v5.3.1 // indirect
 	github.com/go-gorp/gorp/v3 v3.0.2 // indirect
 	github.com/go-kit/kit v0.10.0 // indirect
 	github.com/go-logfmt/logfmt v0.5.0 // indirect
@@ -207,7 +209,7 @@ require (
 	github.com/subosito/gotenv v1.2.0 // indirect
 	github.com/thoas/go-funk v0.8.0 // indirect
 	github.com/weppos/publicsuffix-go v0.13.0 // indirect
-	github.com/xanzy/ssh-agent v0.3.0 // indirect
+	github.com/xanzy/ssh-agent v0.3.1 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190809123943-df4f5c81cb3b // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
@@ -328,3 +330,7 @@ replace github.com/Microsoft/go-winio => github.com/Microsoft/go-winio v0.4.17
 replace bitbucket.org/ww/goautoneg => github.com/munnerz/goautoneg v0.0.0-20120707110453-a547fc61f48d
 
 go 1.17
+
+// To remove once https://github.com/go-git/go-git/pull/485 is merged and go-git is bumped
+// Fixes "reference delta not found" error of auto-bumper
+replace github.com/go-git/go-git/v5 => github.com/ZauberNerd/go-git/v5 v5.4.3-0.20220315170230-29ec1bc1e5db