ci: bump Go, golangci-lint, codespell, and runners

.github/workflows/test.yml

@@ -15,14 +15,15 @@ permissions:
 
 jobs:
   cgroup-v2:
-    name: "cgroup v2 (Ubuntu 24.04)"
+    name: "cgroup v2 (Ubuntu 26.04)"
     timeout-minutes: 10
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.24.x, 1.25.x]
+        # Make sure to have version from go.mod included here.
+        go-version: [1.24.x, 1.26.x]
         race: ["-race", ""]
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
 
     steps:
     - uses: actions/checkout@v7
@@ -34,7 +35,7 @@ jobs:
   cgroup-v1:
     name: "cgroup v1 (AlmaLinux 8)"
     timeout-minutes: 20
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - uses: actions/checkout@v7
 
@@ -63,6 +64,6 @@ jobs:
     needs:
       - cgroup-v2
       - cgroup-v1
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - run: echo "All jobs completed"

.github/workflows/validate.yml

@@ -11,7 +11,7 @@ on:
     # Runs at 00:00 UTC every Monday
     - cron: '0 0 * * 1'
 env:
-  GO_VERSION: 1.25
+  GO_VERSION: 1.26
 permissions:
   contents: read
 
@@ -22,7 +22,7 @@ jobs:
       contents: read
       pull-requests: read
       checks: write # to allow the action to annotate code in the PR.
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
       - uses: actions/checkout@v7
         with:
@@ -32,15 +32,15 @@ jobs:
           go-version: "${{ env.GO_VERSION }}"
       - uses: golangci/golangci-lint-action@v9
         with:
-          version: v2.4
+          version: v2.12
       # Extra linters, only checking new code from a pull request.
       - name: lint-extra
         if: github.event_name == 'pull_request'
         run: |
           golangci-lint run --config .golangci-extra.yml --new-from-rev=HEAD~1
 
   go-fix:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
       - uses: actions/checkout@v7
         with:
@@ -54,23 +54,23 @@ jobs:
           git diff --exit-code
 
   codespell:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - uses: actions/checkout@v7
     - name: install deps
       # Use a known version of codespell.
-      run: pip install --break-system-packages codespell==v2.4.1
+      run: pip install --break-system-packages codespell==v2.4.3
     - name: run codespell
       run: codespell
 
   space-at-eol:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
       - uses: actions/checkout@v7
       - run: if git -P grep -I -n '\s$'; then echo "^^^ extra whitespace at EOL, please fix"; exit 1; fi
 
   deps:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - uses: actions/checkout@v7
     - uses: actions/setup-go@v7
@@ -79,7 +79,7 @@ jobs:
     - run: go mod tidy --diff
 
   govulncheck:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - uses: golang/govulncheck-action@v1
 
@@ -91,6 +91,6 @@ jobs:
       - govulncheck
       - lint
       - space-at-eol
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - run: echo "All jobs completed"