Ignore test failures on 32-bit architectures

A test attempt to use a 64-bit value with int, causing a failure

gopkg.in/yaml.v3
   dh_auto_test -O--buildsystem=golang
	cd obj-arm-linux-gnueabihf && go test -vet=off -v -p 3 gopkg.in/yaml.v3
# gopkg.in/yaml.v3_test [gopkg.in/yaml.v3.test]
src/gopkg.in/yaml.v3/decode_test.go:180:26: constant -9223372036854775808 overflows int
FAIL	gopkg.in/yaml.v3 [build failed]
FAIL
dh_auto_test: error: cd obj-arm-linux-gnueabihf && go test -vet=off -v -p 3 gopkg.in/yaml.v3 returned exit code 2
make: *** [debian/rules:6: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2

See Debian bug #987005.