fix: run go-licenses correctly with downloaded go (release-4.2)

Pick sylabs#3265

If the go toolchain is downloaded due to installed version vs go.mod
then we need to set GOROOT for go-licenses to run correctly.

See: google/go-licenses#149

scripts/update-license-dependencies.sh

@@ -3,8 +3,6 @@
 set -e
 set -u
 
-go install github.com/google/[email protected]
-
 if [ -d "vendor" ]; then
   echo "Please remove vendor directory before running this script"
   exit 255
@@ -16,4 +14,4 @@ if [ ! -f "go.mod" ]; then
   exit 255
 fi
 
-go-licenses report ./... --ignore github.com/sylabs/singularity/v4 --template scripts/LICENSE_DEPENDENCIES.tpl > LICENSE_DEPENDENCIES.md
+$(go env GOROOT)/bin/go run github.com/google/go-licenses@v1.6.0 report ./... --ignore github.com/sylabs/singularity/v4 --template scripts/LICENSE_DEPENDENCIES.tpl > LICENSE_DEPENDENCIES.md