cmd/gorelease: update expected errors (fix build)

CL 432555 changed the go/types error message for undeclared names
from "undeclared name: X" to "undefined: X" to match the compiler.
Update the test files.

For golang/go#55326.

Change-Id: I175705ef1aa357f6578cd05025a35e52520e523c
Reviewed-on: https://go-review.googlesource.com/c/exp/+/435315
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

Author: griesemer

cmd/gorelease/testdata/errors/errors.test

@@ -7,28 +7,28 @@ proxyVersions=example.com/errors@v0.1.0
 -- want --
 # example.com/errors/added
 ## errors in release version:
-added/added.go:3:15: undeclared name: Missing
+added/added.go:3:15: undefined: Missing
 
 ## compatible changes
 package added
 
 # example.com/errors/broken
 ## errors in release version:
-broken/broken.go:3:15: undeclared name: Missing
+broken/broken.go:3:15: undefined: Missing
 
 ## incompatible changes
 X: value changed from 12 to unknown
 
 # example.com/errors/deleted
 ## errors in base version:
-deleted/deleted.go:3:15: undeclared name: Missing
+deleted/deleted.go:3:15: undefined: Missing
 
 ## incompatible changes
 package removed
 
 # example.com/errors/fixed
 ## errors in base version:
-fixed/fixed.go:3:15: undeclared name: Missing
+fixed/fixed.go:3:15: undefined: Missing
 
 ## incompatible changes
 X: value changed from unknown to 12

cmd/gorelease/testdata/fix/compatible_other_suggest.test

@@ -5,7 +5,7 @@ success=false
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/compatible_other_verify.test

@@ -5,7 +5,7 @@ release=v1.1.0
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/compatible_other_verify_err.test

@@ -6,7 +6,7 @@ success=false
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/compatible_same_suggest.test

@@ -5,7 +5,7 @@ success=false
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/compatible_same_verify.test

@@ -5,7 +5,7 @@ release=v1.0.1  # not actually valid, but gorelease can't tell
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/incompatible_other_suggest.test

@@ -5,7 +5,7 @@ success=false
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/incompatible_other_verify.test

@@ -6,7 +6,7 @@ success=false
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Broken: changed from func() invalid type to func() int

cmd/gorelease/testdata/fix/incompatible_same_suggest.test

@@ -5,7 +5,7 @@ success=false
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Bad: changed from func() int to func() string

cmd/gorelease/testdata/fix/incompatible_same_verify.test

@@ -5,7 +5,7 @@ release=v1.0.1  # not actually valid, but gorelease can't tell
 -- want --
 # example.com/fix/bad
 ## errors in base version:
-bad/bad.go:3:15: undeclared name: NOTYPE
+bad/bad.go:3:15: undefined: NOTYPE
 
 ## incompatible changes
 Bad: changed from func() int to func() string