Tests fail with Go 1.22

[QuLogic]

Building with 1.21 passes:

$ podman run --rm -v "$PWD":/usr/src/gotenv:z -w /usr/src/gotenv golang:1.21 go test ./...
go: downloading golang.org/x/text v0.12.0
go: downloading github.com/stretchr/testify v1.7.5
go: downloading github.com/pmezard/go-difflib v1.0.0
go: downloading github.com/davecgh/go-spew v1.1.1
go: downloading gopkg.in/yaml.v3 v3.0.1
ok  	github.com/subosito/gotenv	0.006s

while building with 1.22 fails:

$ podman run --rm -v "$PWD":/usr/src/gotenv:z -w /usr/src/gotenv golang:1.22.0 go test ./...
go: downloading golang.org/x/text v0.12.0
go: downloading github.com/stretchr/testify v1.7.5
go: downloading github.com/davecgh/go-spew v1.1.1
go: downloading gopkg.in/yaml.v3 v3.0.1
go: downloading github.com/pmezard/go-difflib v1.0.0
--- FAIL: TestScanner (0.00s)
    scanner_test.go:75: 
        	Error Trace:	scanner_test.go:75
        	Error:      	Not equal: 
        	            	expected: 4
        	            	actual  : 3
        	Test:       	TestScanner
        	Messages:   	testCase: regular LF split with trailing LF - expected to have the correct line count
    scanner_test.go:75: 
        	Error Trace:	scanner_test.go:75
        	Error:      	Not equal: 
        	            	expected: 4
        	            	actual  : 3
        	Test:       	TestScanner
        	Messages:   	testCase: regular CR split with trailing CR - expected to have the correct line count
    scanner_test.go:75: 
        	Error Trace:	scanner_test.go:75
        	Error:      	Not equal: 
        	            	expected: 4
        	            	actual  : 3
        	Test:       	TestScanner
        	Messages:   	testCase: regular CRLF split with trailing CRLF - expected to have the correct line count
FAIL
FAIL	github.com/subosito/gotenv	0.006s
FAIL

[LeGEC]

indeed, there was a change in the standard library 🤯

link: https://tip.golang.org/doc/go1.22#minor_library_changes

bufio
When a SplitFunc returns ErrFinalToken with a nil token, Scanner will now stop immediately. Previously, it would report a final empty token before stopping, which was usually not desired. Callers that do want to report a final empty token can do so by returning []byte{} rather than nil.