all: switch to and require Go 1.23

Updates #12912

Change-Id: Ib4ae26eb5fb68ad2216cab4913811b94f7eed5b6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

.github/workflows/golangci-lint.yml

@@ -31,10 +31,10 @@ jobs:
           cache: false
 
       - name: golangci-lint
-        # Note: this is the 'v3' tag as of 2023-08-14
-        uses: golangci/golangci-lint-action@639cd343e1d3b897ff35927a75193d57cfcba299
+        # Note: this is the 'v6.1.0' tag as of 2024-08-21
+        uses: golangci/golangci-lint-action@aaa42aa0628b4ae2578232a66b541047968fac86
         with:
-          version: v1.56
+          version: v1.60
 
           # Show only new issues if it's a pull request.
           only-new-issues: true

.github/workflows/test.yml

@@ -14,7 +14,7 @@ env:
   # This variable toggles the fuzz job between two modes:
   #  - false: we expect fuzzing to be happy, and should report failure if it's not.
   #  - true: we expect fuzzing is broken, and should report failure if it start working.
-  TS_FUZZ_CURRENTLY_BROKEN: false
+  TS_FUZZ_CURRENTLY_BROKEN: true
 
 on:
   push: