Update pre-commit from nox-py2 to nox

Fixes #58522

.pre-commit-config.yaml

@@ -738,10 +738,10 @@ repos:
         files: ^doc/.*\.rst
         additional_dependencies: [black==19.10b0]
 
-  - repo: https://github.com/saltstack/salt-nox-pre-commit
-    rev: master
+  - repo: https://github.com/saltstack/mirrors-nox
+    rev: v2020.8.22
     hooks:
-      - id: nox-py2
+      - id: nox
         alias: lint-salt
         name: Lint Salt
         files: ^((setup|noxfile)|(salt|tasks)/.*)\.py$
@@ -750,10 +750,10 @@ repos:
           - lint-salt-pre-commit
           - --
 
-  - repo: https://github.com/saltstack/salt-nox-pre-commit
-    rev: master
+  - repo: https://github.com/saltstack/mirrors-nox
+    rev: v2020.8.22
     hooks:
-      - id: nox-py2
+      - id: nox
         alias: lint-tests
         name: Lint Tests
         files: ^tests/.*\.py$
@@ -762,10 +762,10 @@ repos:
           - lint-tests-pre-commit
           - --
 
-  - repo: https://github.com/saltstack/salt-nox-pre-commit
-    rev: master
+  - repo: https://github.com/saltstack/mirrors-nox
+    rev: v2020.8.22
     hooks:
-      - id: nox-py2
+      - id: nox
         alias: check-docs
         name: Check Docs
         files: ^(salt/.*\.py|doc/ref/.*\.rst)$
@@ -775,10 +775,10 @@ repos:
           - --
           - docs.check
 
-  - repo: https://github.com/saltstack/salt-nox-pre-commit
-    rev: master
+  - repo: https://github.com/saltstack/mirrors-nox
+    rev: v2020.8.22
     hooks:
-      - id: nox-py2
+      - id: nox
         alias: check-filemap
         name: Check Filename Map Change Matching
         files: ^tests/filename_map\.yml$