Also template the template, not only the templated template

builder.toml.tpl

@@ -6,7 +6,7 @@ buildpacks = [
 
   { id = "org.cloudfoundry.buildsystem", uri = "https://storage.googleapis.com/cnb-buildpacks/build-system-cnb/org.cloudfoundry.buildsystem-{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/build-system-cnb").Version' | sed -e 's/^v//g' }}.tgz" },
   { id = "org.cloudfoundry.node-engine", uri = "https://github.com/cloudfoundry/node-engine-cnb/releases/download/{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/node-engine-cnb").Version' }}/node-engine-cnb-{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/node-engine-cnb").Version' | sed -e 's/^v//g' }}.tgz" },
-  { id = "org.cloudfoundry.yarn-install",        uri = "https://github.com/cloudfoundry/yarn-install-cnb/releases/download/v0.1.16/yarn-install-cnb-0.1.16.tgz" },
+  { id = "org.cloudfoundry.yarn-install",        uri = "https://github.com/cloudfoundry/yarn-install-cnb/releases/download/{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/yarn-install-cnb").Version' }}/yarn-install-cnb-{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/yarn-install-cnb").Version' | sed -e 's/^v//g' }}.tgz" },
   { id = "org.cloudfoundry.npm",         uri = "https://github.com/cloudfoundry/npm-cnb/releases/download/{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/npm-cnb").Version' }}/npm-cnb-{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/npm-cnb").Version' | sed -e 's/^v//g' }}.tgz" },
   { id = "org.cloudfoundry.openjdk",     uri = "https://storage.googleapis.com/cnb-buildpacks/openjdk-cnb/org.cloudfoundry.openjdk-{{ go mod download -json | jq -r 'select(.Path == "github.com/cloudfoundry/openjdk-cnb").Version' | sed -e 's/^v//g' }}.tgz" },
 ]