Use File.open in LineCache (#2566)

* Use File.open in LineCache
* Update CHANGELOG

Author: solnic

CHANGELOG.md

@@ -10,6 +10,10 @@
 - Prevent starting Vernier in nested transactions ([#2528](https://github.com/getsentry/sentry-ruby/pull/2528))
 - Fix TypeError when Resque.inline == true ([#2564] https://github.com/getsentry/sentry-ruby/pull/2564)
 
+### Internal
+
+- Use `File.open` in `LineCache` ([#2566](https://github.com/getsentry/sentry-ruby/pull/2566))
+
 ### Miscellaneous
 
 - Deprecate `enable_tracing` in favor of `traces_sample_rate = 1.0` [#2535](https://github.com/getsentry/sentry-ruby/pull/2535)

sentry-ruby/lib/sentry/linecache.rb

@@ -29,9 +29,9 @@ def valid_path?(path)
 
     def getlines(path)
       @cache[path] ||= begin
-        IO.readlines(path)
-                       rescue
-                         nil
+        File.open(path, "r", &:readlines)
+      rescue
+        nil
       end
     end