Fix output for prerelease version of poetry (actions#409)

Author: dmitry-shibanov

dist/setup/index.js

@@ -63920,7 +63920,7 @@ class PoetryCache extends cache_distributor_1.default {
             const lines = stdout.trim().split('\n');
             const config = {};
             for (let line of lines) {
-                line = line.replace(/#.*$/, '');
+                line = line.replace(/#.*$/gm, '');
                 const [key, value] = line.split('=').map(part => part.trim());
                 config[key] = JSON.parse(value);
             }

src/cache-distributions/poetry-cache.ts

@@ -58,7 +58,7 @@ class PoetryCache extends CacheDistributor {
     const config: any = {};
 
     for (let line of lines) {
-      line = line.replace(/#.*$/, '');
+      line = line.replace(/#.*$/gm, '');
 
       const [key, value] = line.split('=').map(part => part.trim());