chore(release): Automate version updates in README instructions

Closes #1122

Author: dzvon

README.md

@@ -52,11 +52,11 @@ We currently only offer these for x86-64 systems.
 We recommend installing sudo-rs and su-s in your `/usr/local` hierarchy so it can co-exist with
 your existing sudo installation. You can achieve this using the commands:
 ```sh
-sudo tar -C /usr/local -xvf sudo-VERSION.tar.gz
+sudo tar -C /usr/local -xvf sudo-0.2.6.tar.gz
 ```
 and for su-rs:
 ```sh
-sudo tar -C /usr/local -xvf su-VERSION.tar.gz
+sudo tar -C /usr/local -xvf su-0.2.6.tar.gz
 ```
 This will install sudo-rs and su-rs in `/usr/local/bin` using the usual commands `sudo` and `su`; it
 will also install our version of `visudo` in that location.

util/update-version.sh

@@ -27,6 +27,10 @@ else
     sed -i 's/^version\s*=\s*".*"/version = "'"$NEW_VERSION"'"/' "$PROJECT_DIR/Cargo.toml"
 fi
 
+echo "Updating version in README.md installation instructions"
+sed -i 's/sudo-\(VERSION\|[0-9]\+\.[0-9]\+\.[0-9]\+\)\.tar\.gz/sudo-'"$NEW_VERSION"'\.tar\.gz/g' "$PROJECT_DIR/README.md"
+sed -i 's/su-\(VERSION\|[0-9]\+\.[0-9]\+\.[0-9]\+\)\.tar\.gz/su-'"$NEW_VERSION"'\.tar\.gz/g' "$PROJECT_DIR/README.md"
+
 echo "Updating version in man pages"
 sed -i 's/^title: SU(1) sudo-rs .*/title: SU(1) sudo-rs '"$NEW_VERSION"' | sudo-rs/' "$PROJECT_DIR"/docs/man/su.1.md
 sed -i 's/^title: SUDO(8) sudo-rs .*/title: SUDO(8) sudo-rs '"$NEW_VERSION"' | sudo-rs/' "$PROJECT_DIR"/docs/man/sudo.8.md