Move linter to separate workflow and bump expected config version

Signed-off-by: Cody Soyland <codysoyland@github.com>

Author: codysoyland

.github/workflows/lint.yaml

@@ -0,0 +1,24 @@
+name: golangci-lint
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: './go.mod'
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v7
+        with:
+          version: v2.0

.github/workflows/tests.yaml

@@ -79,18 +79,3 @@ jobs:
         run: |
           set -e
           addlicense -check -l apache -c 'The Sigstore Authors' -ignore "third_party/**" -v *
-
-  golangci:
-    name: lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-go@3041bf56c941b39c61721a86cd11f3bb1338122a # v5.2.0
-        with:
-          go-version-file: './go.mod'
-          check-latest: true
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@1481404843c368bc19ca9406f87d6e0fc97bdcfd # v7.0.0
-        with:
-          version: v1.61
-          args: --timeout=15m