update workflows

Author: jmckenna

.github/dependabot.yml

@@ -0,0 +1,8 @@
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/build-linux.yml

@@ -11,7 +11,7 @@ jobs:
       runs-on: ${{ matrix.os }}
       steps:
         - name: Checkout repository
-          uses: actions/checkout@v2
+          uses: actions/checkout@v4
 
         - name: Install dependencies
           run: |

.github/workflows/check-crlf.yml

@@ -8,13 +8,13 @@ on: [push, pull_request]
 jobs:
   Check-CRLF:
     name: verify that only LF linefeeds are used
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout repository contents
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
 
       - name: Use action to check for CRLF endings
-        uses: erclu/check-crlf@v1.1.2
+        uses: erclu/check-crlf@v1.2.0
         with: # ignore directories below, space-delimited
           exclude: 

.github/workflows/irc_notify.yml

@@ -16,7 +16,7 @@ jobs:
     #if: github.repository == 'MapServer/mapcache'
     steps:
       - name: irc push
-        uses: rectalogic/notify-irc@v1
+        uses: rectalogic/notify-irc@v2
         if: github.event_name == 'push'
         with:
           channel: "#mapcache"
@@ -26,16 +26,17 @@ jobs:
             ${{ github.actor }} pushed ${{ github.event.ref }} ${{ github.event.compare }}
             ${{ join(github.event.commits.*.message) }}
       - name: irc pull request
-        uses: rectalogic/notify-irc@v1
+        uses: rectalogic/notify-irc@v2
         if: github.event_name == 'pull_request'
         with:
           channel: "#mapcache"
           server: "irc.libera.chat"
           nickname: mapcache-github-notifier
           message: |
             ${{ github.actor }} opened PR ${{ github.event.pull_request.html_url }}
+            ${{ github.event.pull_request.title }}
       - name: irc tag created
-        uses: rectalogic/notify-irc@v1
+        uses: rectalogic/notify-irc@v2
         if: github.event_name == 'create' && github.event.ref_type == 'tag'
         with:
           channel: "#mapcache"