ensure minor and major tags point to the right commit

If you use `pull_request_target` or you've had another commit to your repo since this started running or you're using merge trains then the latest commit might not be the right commit. Instead ensure the semver tags are pointing to the same commit as the target tag.

entrypoint.sh

@@ -21,8 +21,8 @@ git config user.name "${GITHUB_ACTOR}"
 git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
 
 # Update MAJOR/MINOR tag
-git tag -fa "${MAJOR}" -m "${MESSAGE}"
-[ "${MAJOR_VERSION_TAG_ONLY}" = "true" ] || git tag -fa "${MINOR}" -m "${MESSAGE}"
+git tag -fa "${MAJOR}" -m "${MESSAGE}" "${TAG}^{}"
+[ "${MAJOR_VERSION_TAG_ONLY}" = "true" ] || git tag -fa "${MINOR}" -m "${MESSAGE}" "${TAG}^{}"
 
 # Set up remote url for checkout@v1 action.
 if [ -n "${INPUT_GITHUB_TOKEN}" ]; then