Update GolangCI Lint to v1.55.2 & fix lint violations

.circleci/config.yml

@@ -36,4 +36,4 @@ workflows:
     jobs:
       - test
       - golangci-lint/lint:
-          tag: v1.52.2
+          tag: v1.55.2

.golangci.yaml

@@ -9,6 +9,16 @@ linters:
     - maligned         # deprecated and replaced by official fieldalignment.
 
 linters-settings:
+  depguard:
+    rules:
+      # Only allow imports from the stdlib & this module
+      all:
+        list-mode: strict
+        files:
+          - $all
+        allow:
+          - $gostd
+          - github.com/percivalalb/sipuri
   varnamelen:
     max-distance: 17 # default of 5 makes the linter annoying to use.
 

errors.go

@@ -97,7 +97,7 @@ func (e EscapeError) Error() string {
 
 // Is makes EscapeError useable with errors.Is.
 func (e EscapeError) Is(input error) bool {
-	_, ok := input.(EscapeError) //nolint:errorlint
+	_, ok := input.(EscapeError)
 
 	return ok
 }