Linting: lint more on new code only

.github/workflows/ci.yml

@@ -43,8 +43,9 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.56
+          version: v1.63
           working-directory: .
+          only-new-issues: true
           args: --timeout 3m
           skip-pkg-cache: true
       - name: Run shellcheck

.golangci.yml

@@ -2,29 +2,24 @@
 
 run:
   timeout: 10m
-  tests: true
-  # default is true. Enables skipping of directories:
-  #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
-  skip-dirs-use-default: true
-  # Include non-test files tagged as test-only.
-  # Context: https://github.com/ava-labs/avalanchego/pull/3173
+
+issues:
+  new: true
 
 linters:
-  disable-all: true
   enable:
+    - copyloopvar
+    - bidichk
+    - errorlint
+    - exptostd
     - goimports
-    - gosimple
-    - govet
-    - ineffassign
+    - gosec
     - misspell
+    - nolintlint
     - unconvert
-    - unused
+    - wastedassign
     - whitespace
 
 linters-settings:
-  gofmt:
-    simplify: true
-  goconst:
-    min-len: 3 # minimum length of string constant
-    min-occurrences: 6 # minimum number of occurrences
-    ignore-tests: true
+  errorlint:
+    errorf: false