Update CI actions to latest versions and add manual dispatch (#9)

* Update CI actions to latest versions and add manual dispatch

* Update actions/checkout to v6

Author: JanTvrdik

.github/workflows/checks.yml

@@ -5,6 +5,7 @@ on:
         branches:
             - "master"
             - "v[0-9]"
+    workflow_dispatch:
 jobs:
     checks:
         runs-on: ${{ matrix.os }}
@@ -16,7 +17,7 @@ jobs:
         steps:
             -
                 name: Checkout code
-                uses: actions/checkout@v4
+                uses: actions/checkout@v6
             -
                 name: Setup PHP
                 uses: shivammathur/setup-php@v2

.github/workflows/lint.yml

@@ -5,14 +5,15 @@ on:
         branches:
             - "master"
             - "v[0-9]"
+    workflow_dispatch:
 
 jobs:
     xml-linter:
         runs-on: ubuntu-latest
         steps:
             -
                 name: Checkout code
-                uses: actions/checkout@v4
+                uses: actions/checkout@v6
 
             -
                 name: Install dependencies