Applying temp workaround for CI in node 12 and 13

See nodejs/node-addon-api#660

.github/workflows/avoid-double-delete-ref-in-object-wrap.patch

@@ -0,0 +1,14 @@
+--- /media/hdd/dev/node-addon-api-master/napi-inl.h	2020-01-21 06:41:58.000000000 +0100
++++ node_modules/node-addon-api/napi-inl.h	2020-01-26 16:33:38.000000000 +0100
+@@ -3121,8 +3121,10 @@
+     Object object = Value();
+     // It is not valid to call `napi_remove_wrap()` with an empty `object`.
+     // This happens e.g. during garbage collection.
+-    if (!object.IsEmpty())
++    if (!object.IsEmpty()) {
+       napi_remove_wrap(Env(), object, nullptr);
++      this->SuppressDestruct();
++    }
+   }
+ }
+

.github/workflows/nodejs.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     strategy:
       matrix:
-        node: [10] # Disabled node 12 until crash is fixed
+        node: [10, 12, 13]
     runs-on: ubuntu-latest
     container:
       image: node:${{ matrix.node }}-buster
@@ -20,6 +20,9 @@ jobs:
         apt-get install -y cmake libflac-dev flac
     - name: Install
       run: npm install
+    - name: Workarounds
+      run: /
+        patch node_modules/node-addon-api/napi-inl.h < .github/workflows/avoid-double-delete-ref-in-object-wrap.patch
     - name: Build
       run: npm run cmake-js -- build
     - name: Lint