Fix branch-solution for Ubuntu runners. Fixes #229 (#407)

* Filter non-matching lines from git command (branch-solution)

* npm run update-dist

---------

Co-authored-by: Clemens Schlomka <[email protected]>

Author: tehcrashxor

dist/actions/branch-solution/index.js

@@ -18620,7 +18620,7 @@ var currDir = process.cwd();
     if (branch && branch.length >= 2) {
       return branch[1];
     }
-  });
+  }).filter((x) => x !== void 0);
   if (!head || head.length < 1 || head.length > 1 || !head[0]) {
     throw new Error(`Cannot determine HEAD from remote: ${repoUrl}`);
   }

src/actions/branch-solution/index.ts

@@ -59,7 +59,7 @@ const currDir = process.cwd();
         if (branch && branch.length >= 2) {
             return branch[1];
         }
-    });
+    }).filter(x => x !== undefined);
     if (!head || head.length < 1 || head.length > 1 || !head[0]) {
         throw new Error(`Cannot determine HEAD from remote: ${repoUrl}`);
     }