Restore codeql/dataflowstack dependency in Java and C# qlpacks

The upstream 2.25.0 release merge dropped codeql/dataflowstack from
codeql/java-all and codeql/csharp-all dependencies. This breaks
TaintTrackingStack.qll and DataFlowStack.qll which import from that pack.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Dilan Bhalla

csharp/ql/lib/qlpack.yml

@@ -8,6 +8,7 @@ upgrades: upgrades
 dependencies:
   codeql/controlflow: ${workspace}
   codeql/dataflow: ${workspace}
+  codeql/dataflowstack: ${workspace}
   codeql/mad: ${workspace}
   codeql/ssa: ${workspace}
   codeql/threat-models: ${workspace}

java/ql/lib/qlpack.yml

@@ -8,6 +8,7 @@ upgrades: upgrades
 dependencies:
   codeql/controlflow: ${workspace}
   codeql/dataflow: ${workspace}
+  codeql/dataflowstack: ${workspace}
   codeql/mad: ${workspace}
   codeql/quantum: ${workspace}
   codeql/rangeanalysis: ${workspace}