Update actions ubuntu version

Author: benjeffery

.github/workflows/gh-pages.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   mdbook:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
     steps:

.github/workflows/miri.yml

@@ -12,7 +12,7 @@ name: Miri
 jobs:
   test_miri:
     name: Test (Miri)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24
     steps:
       - uses: actions/[email protected]
       - uses: actions-rs/[email protected]

.github/workflows/security.yaml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   audit:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24
     steps:
       - name: Checkout the Repository
         uses: actions/[email protected]

.github/workflows/semver.yml

@@ -8,7 +8,7 @@ name: semver-checks
 jobs:
   semver:
     name: Run cargo-semver-checks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24
     strategy:
       matrix:
         rust:

.github/workflows/tests.yml

@@ -46,7 +46,7 @@ jobs:
 
   fmt:
     name: rust fmt
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24
     steps:
       - uses: actions/[email protected]
         with:
@@ -61,7 +61,7 @@ jobs:
 
   clippy:
     name: clippy!!
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24
     strategy:
       matrix:
         rust:
@@ -79,7 +79,7 @@ jobs:
 
   msrv:
     name: Verify MSRV
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24
     strategy:
       matrix:
         rust: