tools: do not throw on missing `create-release-proposal.sh`

tools: do not throw on missing `create-release-proposal.sh` · nodejs/node@d6469b5

Original file line number	Diff line number	Diff line change
`@@ -71,9 +71,11 @@ jobs:`
`71`	`71`	`git config --local user.name "Node.js GitHub Bot"`
`72`	`72`
`73`	`73`	`- name: Start git node release prepare`
	`74`	+# `git update-index` tells git to ignore future changes to the `.sh` file,
	`75`	+# `\|\| true` is there to ignore the error if such file doesn't exist yet.
`74`	`76`	`# The curl command is to make sure we run the version of the script corresponding to the current workflow.`
`75`	`77`	`run: \|`
`76`		`- git update-index --assume-unchanged tools/actions/create-release-proposal.sh`
	`78`	`+ git update-index --assume-unchanged tools/actions/create-release-proposal.sh \|\| true`
`77`	`79`	`curl -fsSLo tools/actions/create-release-proposal.sh https://github.com/${GITHUB_REPOSITORY}/raw/${GITHUB_SHA}/tools/actions/create-release-proposal.sh`
`78`	`80`	`./tools/actions/create-release-proposal.sh "${RELEASE_DATE}" "${RELEASE_LINE}" "${GITHUB_ACTOR}"`
`79`	`81`	`env:`