ci: upgrade golangci-lint to 2.3.0

Upgrades the configuration file from V1 to V2 format which was pretty
straightforward. The vendor/ directory no longer needs to be excluded as
it is a default now in 2.x.

Updates the pre-commit configuration to the latest and greatest version.

.golangci.yml

@@ -1,6 +1,5 @@
 ---
-exclude-dirs:
-  - vendor
+version: "2"
 
 linters-settings:
   govet:

.pre-commit-config.yaml

@@ -20,7 +20,7 @@ repos:
       - id: pyspelling
         args: ["--config", ".spellcheck.yml"]
   - repo: https://github.com/golangci/golangci-lint
-    rev: v1.63.1
+    rev: v2.3.0
     hooks:
       - id: golangci-lint
   - repo: https://github.com/hhatto/autopep8

Makefile

@@ -22,7 +22,7 @@ RST2MAN ?= rst2man
 # see https://hub.docker.com/r/docker/golangci-lint/tags
 # v1.55 to get golang 1.21 (1.21.3)
 # v1.53 to get golang 1.20 (1.20.5)
-GOLANGCI_LINT_VERSION=v1.55
+GOLANGCI_LINT_VERSION=v2.3.0
 GOLANGCI_LINT_CACHE_DIR=$(HOME)/.cache/golangci-lint/$(GOLANGCI_LINT_VERSION)
 GOLANGCI_COMPOSER_IMAGE=composer_golangci
 #