CI: use path exclusions to filter

This was not running CI when only template files were modified, which is
undesirable.
Instead of trying to include all the things we do want to run CI for,
use path exclusions to filter out the things we don't want to run CI
for.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

.github/workflows/ci.yml

@@ -8,28 +8,22 @@ on:
   pull_request:
     branches:
       - main
-    paths:
-        - "*.go"
-        - "**/*.go"
-        - Dockerfile
-        - docker-bake.hcl
-        - .github/workflows/ci.yml
-        - frontend/mariner2/Dockerfile
-        - "test/fixtures/*"
-        - go.mod
-        - go.sum
+    paths-ignore:
+      - 'website/**'
+      - 'docs/**'
+      - '*.md'
+      - 'CODEOWNERS'
+      - 'LICENSE'
+
   push:
     branches:
       - main
-    paths:
-      - "*.go"
-      - "**/*.go"
-      - Dockerfile
-      - docker-bake.hcl
-      - .github/workflows/ci.yml
-      - frontend/mariner2/Dockerfile
-      - go.mod
-      - go.sum
+    paths-ignore:
+      - 'website/**'
+      - 'docs/**'
+      - '*.md'
+      - 'CODEOWNERS'
+      - 'LICENSE'
 
 permissions:
   contents: read