chore: fix release-pkg.sh for #4818

Fix regression introduced by #4818 that two lines starting with `version
=` appears in the file.

Author: doitian

devtools/release/release-pkg.sh

@@ -3,20 +3,20 @@
 on_push_pkg() {
   BRANCH=$(git symbolic-ref --quiet HEAD)
   BRANCH="${BRANCH#refs/heads/}"
-  VERSION="v$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml)"
+  VERSION="v$(sed -n '/^version = "\(.*\)"/{s//\1/p;q}' Cargo.toml)"
   echo "$BRANCH -> upstream/$BRANCH"
   echo "$BRANCH -> upstream/pkg/$VERSION"
 
   git push upstream "$BRANCH" "$BRANCH:pkg/$VERSION"
 }
 
 on_tag() {
-  VERSION="v$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml)"
+  VERSION="v$(sed -n '/^version = "\(.*\)"/{s//\1/p;q}' Cargo.toml)"
   git tag -s -m "$VERSION" "$VERSION"
 }
 
 on_push_tag() {
-  VERSION="v$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml)"
+  VERSION="v$(sed -n '/^version = "\(.*\)"/{s//\1/p;q}' Cargo.toml)"
   git push upstream "$VERSION"
 }