Update go-git to v5.4.2 to fix repo cloning bug

[puerco]

What type of PR is this?

/kind bug

What this PR does / why we need it:

This PR bumps the go-git package to version v5.4.2 which fixes a bug that was preventing us from cloning kubernetes/kubernetes

/priority critical-urgent
/milestone v1.22

Signed-off-by: Adolfo García Veytia (Puerco) adolfo.garcia@uservers.net

Which issue(s) this PR fixes:

Fixes #2094

Special notes for your reviewer:

The go-git team has disabled the feature that caused the bug: go-git/go-git#326

I have confirmed the release process runs again from my branch: https://console.cloud.google.com/cloud-build/builds;region=global/951c177e-eaea-4d0f-a943-2849b78ffd3d?project=kubernetes-release-test

Step #3: INFO[2021-06-02T14:12:58Z] Preparing workspace for staging in /workspace/src/k8s.io/kubernetes 
Step #3: INFO[2021-06-02T14:12:58Z] Cloning repository to /workspace/src/k8s.io/kubernetes 
Step #3: INFO[2021-06-02T14:16:33Z] Tagging repository                            step=6/9
Step #3: INFO[2021-06-02T14:16:33Z] Preparing version v1.22.0-alpha.3            
Step #3: INFO[2021-06-02T14:16:33Z] Checking out branch master                   
Step #3: INFO[2021-06-02T14:16:33Z] Current branch is master                     
Step #3: INFO[2021-06-02T14:16:33Z] Detaching HEAD at commit 1795a98eebe58f to create tag v1.22.0-alpha.3 

Does this PR introduce a user-facing change?

Update `go-git` to v5.4.2 to fix a bug that prevented the release process to clone repositories

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: puerco, saschagrunert

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