fix: add xml2 to packg

Author: quishqa

.github/workflows/R-CMD-check.yaml

@@ -41,7 +41,7 @@ jobs:
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
-          extra-packages: any::rcmdcheck, any::XML
+          extra-packages: any::rcmdcheck
           needs: check
 
       - uses: r-lib/actions/check-r-package@v2

DESCRIPTION

@@ -17,7 +17,8 @@ Depends:
     R (>= 2.10)
 Imports: 
     httr,
-    XML
+    XML,
+    xml2
 Suggests: 
     testthat (>= 3.0.0)
 Config/testthat/edition: 3