fix(updater): replace url vars in query params (#756)

.changes/updater-string-replace-round2.md

@@ -0,0 +1,5 @@
+---
+"updater": "patch"
+---
+
+The plugin now correctly replaces `arch`, `current_version` and `target` in query params again.

plugins/updater/src/updater.rs

@@ -258,13 +258,17 @@ impl Updater {
             // the URL will be generated dynamically
             let url: Url = url
                 .to_string()
-                // url::Url automatically url-encodes the string
+                // url::Url automatically url-encodes the path components
                 .replace(
                     "%7B%7Bcurrent_version%7D%7D",
                     &self.current_version.to_string(),
                 )
                 .replace("%7B%7Btarget%7D%7D", &self.target)
                 .replace("%7B%7Barch%7D%7D", self.arch)
+                // but not query parameters
+                .replace("{{current_version}}", &self.current_version.to_string())
+                .replace("{{target}}", &self.target)
+                .replace("{{arch}}", self.arch)
                 .parse()?;
 
             let mut request = Client::new().get(url).headers(headers.clone());