[CI] Disable fail-on-missing for some ubuntu machines

Author: mdessole

.github/workflows/root-ci-config/buildconfig/fedora41.txt

@@ -6,3 +6,4 @@ experimental_adaptivecpp=ON
 experimental_genvectorx=ON
 pythia8=Off
 ccache=On
+fail-on-missing=OFF

.github/workflows/root-ci-config/buildconfig/fedora42.txt

@@ -8,3 +8,4 @@ experimental_genvectorx=ON
 pythia8=OFF
 unuran=OFF
 vdt=OFF
+fail-on-missing=OFF

.github/workflows/root-ci-config/buildconfig/ubuntu2404-cuda.txt

@@ -17,3 +17,4 @@ test_distrdf_dask=OFF
 test_distrdf_pyspark=OFF
 unfold=OFF
 webgui=ON
+fail-on-missing=OFF

.github/workflows/root-ci-config/buildconfig/ubuntu2404.txt

@@ -3,3 +3,4 @@ experimental_genvectorx=ON
 pythia8=OFF
 tmva-sofie=ON
 ccache=On
+fail-on-missing=OFF

.github/workflows/root-ci-config/buildconfig/ubuntu2504.txt

@@ -2,3 +2,4 @@ experimental_adaptivecpp=ON
 experimental_genvectorx=ON
 ccache=ON
 pythia8=OFF
+fail-on-missing=OFF