Fix PATH on ci

Author: Ariouz

.github/workflows/ci-matrix-gen.yml

@@ -68,11 +68,9 @@ jobs:
         if: runner.os != 'Windows'
         run: |
           echo "PARENT_DIRECTORY=$(pwd)" >> $GITHUB_ENV
-          echo "PATH=/usr/bin:/bin:$(PATH)" >> $GITHUB_ENV
       - name: Setup Windows paths like on buildbot CI
         if: runner.os == 'Windows'
         run: |
-          cd ..
           "PARENT_DIRECTORY=$PWD" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
 
       # Set up Python and packages

graalpython/com.oracle.graal.python/src/META-INF/native-image/org.graalvm.python/python-language/native-image.properties

@@ -6,4 +6,4 @@ Args = -H:MaxRuntimeCompileMethods=20000 \
        --add-exports=org.graalvm.nativeimage/org.graalvm.nativeimage.impl=ALL-UNNAMED
 
 # GR-46399: libpythonvm needs more than the default minimum of 8 GB to be built
-JavaArgs = -Xms14g
+JavaArgs = -Xmx7g