ci: update deprecated golangci-lint config

Fixes:

```
WARN [config_reader] The configuration option `linters.errcheck.exclude` is deprecated, please use `linters.errcheck.exclude-functions`.
```

Signed-off-by: TJ Hoplock <[email protected]>

Author: tjhop

.golangci.yml

@@ -12,7 +12,7 @@ issues:
 
 linters-settings:
   errcheck:
-    exclude: scripts/errcheck_excludes.txt
+    exclude-functions: scripts/errcheck_excludes.txt
   revive:
     rules:
       # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#unused-parameter