fix gcc version error

Cross.toml

@@ -1,5 +1,15 @@
+[target.x86_64-unknown-linux-gnu]
+pre-build = [
+    "apt-get update && apt-get remove -y gcc g++ && apt-get install -y gcc-10 g++-10",
+    "ln -s /usr/bin/gcc-10 /usr/bin/gcc",
+    "ln -s /usr/bin/g++-10 /usr/bin/g++",
+]
+
 [target.i686-unknown-linux-gnu]
 pre-build = [
+    "apt-get update && apt-get remove -y gcc g++ && apt-get install -y gcc-10 g++-10",
+    "ln -s /usr/bin/gcc-10 /usr/bin/gcc",
+    "ln -s /usr/bin/g++-10 /usr/bin/g++",
     "apt-get update && apt-get install --assume-yes unzip",
     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v27.3/protoc-27.3-linux-x86_64.zip",
     "unzip protoc-27.3-linux-x86_64.zip -d $HOME/.local",
@@ -9,6 +19,9 @@ pre-build = [
 
 [target.aarch64-unknown-linux-gnu]
 pre-build = [
+    "apt-get update && apt-get remove -y gcc g++ && apt-get install -y gcc-10 g++-10",
+    "ln -s /usr/bin/gcc-10 /usr/bin/gcc",
+    "ln -s /usr/bin/g++-10 /usr/bin/g++",
     "apt-get update && apt-get install --assume-yes unzip",
     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v27.3/protoc-27.3-linux-x86_64.zip",
     "unzip protoc-27.3-linux-x86_64.zip -d $HOME/.local",