build: Updated ubuntu image

Signed-off-by: Philip Windecker <philip.windecker@avenyr.de>

Author: philipwindecker

.github/workflows/protobuf.yml

@@ -9,7 +9,7 @@ jobs:
   build-proto2-linux64:
     name: Build Proto2 Linux 64
 
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
 
     steps:
     - name: Checkout OSI
@@ -100,7 +100,7 @@ jobs:
   build-proto3-linux64:
     name: Build Proto3 Linux 64
 
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
 
     steps:
     - name: Checkout OSI