Use sandboxed-step 1.2.0 in all places

Author: mhutchinson

.github/workflows/test.yml

@@ -46,7 +46,7 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: stable
-      - uses: geomys/sandboxed-step@v1.1.1
+      - uses: geomys/sandboxed-step@v1.2.0
         with:
           run: go run honnef.co/go/tools/cmd/staticcheck@latest ./...
   govulncheck:
@@ -58,6 +58,6 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: stable
-      - uses: geomys/sandboxed-step@v1.1.1
+      - uses: geomys/sandboxed-step@v1.2.0
         with:
           run: go run golang.org/x/vuln/cmd/govulncheck@latest ./...