Make "Check Go" workflow paths filter handle either YAML extension

There are two file extensions in common use for YAML files: `.yaml` and `.yml`. Although this project uses `.yml`
exclusively for YAML files, this is a standardized workflow which might be applied to projects that have established the
use of the other extension. It will be most flexible if it supports both.

Author: per1234

.github/workflows/check-go-task.yml

@@ -9,15 +9,15 @@ on:
   create:
   push:
     paths:
-      - ".github/workflows/check-go-task.yml"
-      - "Taskfile.yml"
+      - ".github/workflows/check-go-task.ya?ml"
+      - "Taskfile.ya?ml"
       - "**/go.mod"
       - "**/go.sum"
       - "**.go"
   pull_request:
     paths:
-      - ".github/workflows/check-go-task.yml"
-      - "Taskfile.yml"
+      - ".github/workflows/check-go-task.ya?ml"
+      - "Taskfile.ya?ml"
       - "**/go.mod"
       - "**/go.sum"
       - "**.go"