Bump nixpkgs to latest to update crystal version

.github/workflows/ci-crystal.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: crystal-lang/install-crystal@v1
         with:
-          crystal: '1.7.3'
+          crystal: '1.8.1'
       # Need node.js to install validator. Spec includes the validator runner
       - run: crystal spec --tag '~needs_npm'
   lint:
@@ -39,10 +39,10 @@ jobs:
         uses: actions/cache@v3
         with:
           path: ./bin/ameba
-          key: ameba-${{ runner.os }}-crystal_1.7.1-${{ hashFiles('shard.lock') }}
+          key: ameba-${{ runner.os }}-crystal_1.8.1-${{ hashFiles('shard.lock') }}
       - uses: crystal-lang/install-crystal@v1
         with:
-          crystal: '1.7.3'
+          crystal: '1.8.1'
       - run: shards install
         if: steps.cache.outputs.cache-hit != 'true'
       - run: make crystal-lint-check

.github/workflows/lint-definition.yml

@@ -19,6 +19,6 @@ jobs:
       - uses: actions/checkout@v3
       - uses: crystal-lang/install-crystal@v1
         with:
-          crystal: '1.7.3'
+          crystal: '1.8.1'
       - run: shards install --production
       - run: crystal run src/cli.cr -- lint

shell.nix

@@ -1,9 +1,9 @@
-{ pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/4c3edba85629ec304b5269e4b0ac7f26c433df23.tar.gz") { } }:
+{ pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/f3f15fa73ddf15fa66cc4f80cda4c5afb356306b.tar.gz") { } }:
 
 pkgs.mkShell {
   buildInputs = [
     pkgs.nodejs-18_x
-    pkgs.crystal_1_7
+    pkgs.crystal_1_8
     pkgs.shards
     pkgs.dprint
     pkgs.nil