.travis.yml: go1.19.5 for android builds (ethereum#26524)

Author: ucwong

.travis.yml

@@ -148,7 +148,7 @@ jobs:
         - sdkmanager "platform-tools" "platforms;android-15" "platforms;android-19" "platforms;android-24" "ndk-bundle"
 
         # Install Go to allow building with
-        - curl https://dl.google.com/go/go1.18.linux-amd64.tar.gz | tar -xz
+        - curl https://dl.google.com/go/go1.19.5.linux-amd64.tar.gz | tar -xz
         - export PATH=`pwd`/go/bin:$PATH
         - export GOROOT=`pwd`/go
         - export GOPATH=$HOME/go