ci: build nowallet depends+src using GCC 14

Author: kwvg

.github/workflows/matrix.json

@@ -19,7 +19,7 @@
       {
         "depends_name": "x86_64-pc-linux-gnu_nowallet",
         "host": "x86_64-pc-linux-gnu",
-        "dep_opts": "NO_WALLET=1"
+        "dep_opts": "NO_WALLET=1 CC=gcc-14 CXX=g++-14"
       }
     ]
   },

.gitlab-ci.yml

@@ -201,7 +201,7 @@ x86_64-pc-linux-gnu_nowallet:
     - .skip-in-fast-mode-template
   variables:
     HOST: x86_64-pc-linux-gnu
-    DEP_OPTS: "NO_WALLET=1"
+    DEP_OPTS: "NO_WALLET=1 CC=gcc-14 CXX=g++-14"
 
 x86_64-pc-linux-gnu_multiprocess:
   extends:

ci/test/00_setup_env_native_nowallet.sh

@@ -10,4 +10,4 @@ export CONTAINER_NAME=ci_native_nowallet
 export PACKAGES="python3-zmq"
 export DEP_OPTS="NO_WALLET=1"
 export GOAL="install"
-export BITCOIN_CONFIG="--enable-reduce-exports --with-boost-process"
+export BITCOIN_CONFIG="--enable-reduce-exports --with-boost-process CC=gcc-14 CXX=g++-14"