test: add protobuf

Author: rhubert

tests/buildall/recipes/all.yaml

@@ -76,6 +76,7 @@ depends:
     - libs::pcre2-tgt
     - libs::pixman-tgt
     - libs::popt-tgt
+    - libs::protobuf-tgt
     - libs::qt6-base-tgt
     - libs::qt6-declarative-tgt
     - libs::qt6-remoteobjects-tgt

tests/buildall/recipes/buildall.yaml

@@ -13,6 +13,9 @@ depends:
           - devel::rpcsvc-proto
           - devel::squashfs-tools
 
+    - name: libs::protobuf
+      use: [tools]
+      forward: true
     - name: libs::glib-tools
       use: [tools]
       forward: true