Ease CI requirements for go-verdiff and codecov (operator-framework#1955)

1) Remove path from now-required go-verdiff CI

We're experiencing a weird behavior with this CI being required,
and running only on certain paths.

2) Add a 2% threshold for codecov

Signed-off-by: Todd Short <[email protected]>

Author: tmshort

.github/workflows/go-verdiff.yaml

@@ -1,9 +1,6 @@
 name: go-verdiff
 on:
   pull_request:
-    paths:
-    - '**.mod'
-    - '.github/workflows/go-verdiff.yaml'
     branches:
     - main
 jobs:

codecov.yml

@@ -5,6 +5,11 @@ codecov:
 # Configure the paths to include in coverage reports.
 # Exclude documentation, YAML configurations, and test files.
 coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 2%
   paths:
     - "api/"
     - "cmd/"