Fix error on dash in instance name

Fix stripPaths logic breaking when the instance name contains RegExp
meta characters due to a lack of escaping.

packages/lib/factorio/server.js

@@ -554,7 +554,7 @@ class FactorioServer extends events.EventEmitter {
 			this._stripRegExp = new RegExp(
 				`(${escapeRegExp(this.writePath("temp", "currently-playing", path.sep))})|` +
 				`(${escapeRegExp(this.writePath(path.sep))})|` +
-				`(\\.\\.\\.[${chars}]*?currently-playing\\${path.sep})`,
+				`(\\.\\.\\.[${escapeRegExp(chars)}]*?currently-playing\\${path.sep})`,
 				"g"
 			);
 		}

test/lib/factorio/server.js

@@ -170,6 +170,16 @@ describe("lib/factorio/server", function() {
 		let writePath = path.join("temp", "test", "server");
 		let server = new libFactorio.FactorioServer(path.join("test", "file", "factorio"), writePath, {});
 
+		describe("constructor()", function() {
+			it("should handle dashes in write path with strapPaths enabled", function() {
+				new libFactorio.FactorioServer(
+					path.join("test", "file", "factorio"),
+					path.join("temp", "test", "server-1"),
+					{ stripPaths: true }
+				);
+			});
+		});
+
 		describe(".init()", function() {
 			it("should not throw on first call", async function() {
 				await server.init();