travis: bump the wolfssl CI build to use 4.4.0

Closes #5301
diff --git a/.travis.yml b/.travis.yml
index 415e151..59f075f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@
 sudo: required
 cache:
     directories:
-        - $HOME/wolfssl-4.0.0-stable
+        - $HOME/wolfssl-4.4.0-stable
         - $HOME/mesalink-1.0.0
         - $HOME/nghttp2-1.39.2
 
diff --git a/scripts/travis/before_script.sh b/scripts/travis/before_script.sh
index 4e8164c..4292fd6 100755
--- a/scripts/travis/before_script.sh
+++ b/scripts/travis/before_script.sh
@@ -103,18 +103,18 @@
 # changing a build directory name below (eg a version change) then you must
 # change it in .travis.yml `cache: directories:` as well.
 if [ $TRAVIS_OS_NAME = linux ]; then
-  if [ ! -e $HOME/wolfssl-4.0.0-stable/Makefile ]; then
+  if [ ! -e $HOME/wolfssl-4.4.0-stable/Makefile ]; then
     cd $HOME
-    curl -LO https://github.com/wolfSSL/wolfssl/archive/v4.0.0-stable.tar.gz
-    tar -xzf v4.0.0-stable.tar.gz
-    cd wolfssl-4.0.0-stable
+    curl -LO https://github.com/wolfSSL/wolfssl/archive/v4.4.0-stable.tar.gz
+    tar -xzf v4.4.0-stable.tar.gz
+    cd wolfssl-4.4.0-stable
     ./autogen.sh
     ./configure --enable-tls13 --enable-all
     touch wolfssl/wolfcrypt/fips.h
     make
   fi
 
-  cd $HOME/wolfssl-4.0.0-stable
+  cd $HOME/wolfssl-4.4.0-stable
   sudo make install
 
   if [ ! -e $HOME/mesalink-1.0.0/Makefile ]; then