Make PR input not required (#196)

Author: sterliakov

.github/workflows/check_pr.yaml

@@ -6,7 +6,6 @@ on:
       pr:
         type: number
         description: PR to check
-        required: true
       action:
         type: choice
         description: Action to perform

.pre-commit-config.yaml

@@ -57,7 +57,7 @@ repos:
     hooks:
       - id: actionlint
         additional_dependencies:
-          - github.com/wasilibs/go-shellcheck/cmd/shellcheck@v0.10.0
+          - github.com/wasilibs/go-shellcheck/cmd/shellcheck@v0.11.1
 
   - repo: https://github.com/woodruffw/zizmor-pre-commit
     rev: v1.15.2