.github/workflows/build.yml: switch to Ubuntu 24.04

Ubuntu 24.04 comes with sane versions of fmt, nlohmann_json and
OpenSSL.

.github/workflows/build.yml

@@ -21,7 +21,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - id: checkout
         uses: actions/checkout@v4
@@ -38,9 +38,12 @@ jobs:
             ruby-net-ssh \
             meson \
             ccache \
+            nlohmann-json3-dev \
+            libfmt-dev \
             libgtest-dev \
             libcap-dev \
             libseccomp-dev \
+            libssl-dev \
             libsystemd-dev \
             libavahi-client-dev \
             libmd-dev \
@@ -57,7 +60,6 @@ jobs:
             -Dauto_features=enabled \
             -Ddocumentation=disabled \
             -Dtest=true \
-             --force-fallback-for=fmt,libcrypto,nlohmann_json \
             -Dwrap_mode=nofallback \
             output
 
@@ -76,7 +78,7 @@ jobs:
         run: ./test/test_lukko.py output
 
   mini:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - id: checkout
         uses: actions/checkout@v4
@@ -89,6 +91,7 @@ jobs:
           sudo apt-get install -y --no-install-recommends \
             meson \
             ccache \
+            libfmt-dev \
             libgtest-dev \
             libsodium-dev
 
@@ -105,7 +108,6 @@ jobs:
             -Dtranslation=false \
             -Dcontrol=false \
             -Dpond=false \
-             --force-fallback-for=fmt \
             -Dwrap_mode=nofallback \
             output