CI: add Go 1.24, drop go1.22

Also, bump golangci-lint to v1.64 (v1.64.2 added Go 1.24 support).

NOTE we still use Go 1.23.x for official builds.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04, ubuntu-24.04, actuated-arm64-6cpu-8gb]
-        go-version: [1.22.x, 1.23.x]
+        go-version: [1.23.x, 1.24.x]
         rootless: ["rootless", ""]
         race: ["-race", ""]
         criu: ["", "criu-dev"]

.github/workflows/validate.yml

@@ -8,7 +8,7 @@ on:
       - release-*
   pull_request:
 env:
-  GO_VERSION: 1.23.x
+  GO_VERSION: 1.24
 permissions:
   contents: read
 
@@ -40,7 +40,7 @@ jobs:
           sudo apt -qy install libseccomp-dev
       - uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.62
+          version: v1.64
       # Extra linters, only checking new code from a pull request.
       - name: lint-extra
         if: github.event_name == 'pull_request'