Update Triggers dependency for CLI

[dibyom]

Changes

Now that tektoncd/triggers#469 is merged, we can get rid
of the temporary replace that used a fork of Triggers

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes tests (if functionality changed/added)
• Run the code checkers with make check
• Regenerate the manpages, docs and go formatting with make generated
• Commit messages follow commit message best practices

See the contribution guide
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[dibyom]

I ran make check and it failed both on my local master as well as this branch:

=== RUN   TestGetError                                                                                                                      
    TestGetError: file_test.go:64: assertion failed: expected error "Get httpz://foo.com/task.yaml: unsupported protocol scheme \"httpz\"", 
got "Get \"httpz://foo.com/task.yaml\": unsupported protocol scheme \"httpz\""                                                              
--- FAIL: TestGetError (0.00s)                                                                                                              
FAIL                                                                                                                                        
coverage: 51.6% of statements                                                                                                               
FAIL    github.com/tektoncd/cli/pkg/file        0.364s  

[danielhelfand]

I ran make check and it failed both on my local master as well as this branch:

=== RUN   TestGetError                                                                                                                      
    TestGetError: file_test.go:64: assertion failed: expected error "Get httpz://foo.com/task.yaml: unsupported protocol scheme \"httpz\"", 
got "Get \"httpz://foo.com/task.yaml\": unsupported protocol scheme \"httpz\""                                                              
--- FAIL: TestGetError (0.00s)                                                                                                              
FAIL                                                                                                                                        
coverage: 51.6% of statements                                                                                                               
FAIL    github.com/tektoncd/cli/pkg/file        0.364s  

By chance are you using go v.1.14? We experienced similar issues when the golang Tasks in the catalog we use for our release pipeline was updated.

[dibyom]

By chance are you using go v.1.14? We experienced similar issues when the golang Tasks in the catalog we use for our release pipeline was updated.

Yes! Using go1.13 seems to have fixed it!

[pradeepitm12]

/lgtm

[tekton-robot]

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This pull-request has been approved by: piyush-garg, pradeepitm12

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