fix: mark E2B_API_KEY as a required env var for E2B tools (#6688)

E2B_API_KEY was declared with required=False on the shared E2B tool
base (E2BExecTool, E2BFileTool, E2BPythonTool), even though none of
the three tools can create or attach to a sandbox without it.
E2B_DOMAIN stays optional since it genuinely defaults to e2b.dev.

Regenerated lib/crewai-tools/tool.specs.json via
generate_tool_specs.py to reflect the change.

Author: thiagomoretto

lib/crewai-tools/src/crewai_tools/tools/e2b_sandbox_tool/e2b_base_tool.py

@@ -88,7 +88,7 @@ class E2BBaseTool(BaseTool):
             EnvVar(
                 name="E2B_API_KEY",
                 description="API key for E2B sandbox service",
-                required=False,
+                required=True,
             ),
             EnvVar(
                 name="E2B_DOMAIN",

lib/crewai-tools/tool.specs.json

@@ -8967,7 +8967,7 @@
           "default": null,
           "description": "API key for E2B sandbox service",
           "name": "E2B_API_KEY",
-          "required": false
+          "required": true
         },
         {
           "default": null,
@@ -9188,7 +9188,7 @@
           "default": null,
           "description": "API key for E2B sandbox service",
           "name": "E2B_API_KEY",
-          "required": false
+          "required": true
         },
         {
           "default": null,
@@ -9408,7 +9408,7 @@
           "default": null,
           "description": "API key for E2B sandbox service",
           "name": "E2B_API_KEY",
-          "required": false
+          "required": true
         },
         {
           "default": null,