Update issue templates

.github/ISSUE_TEMPLATE/gssoc23.md

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+---
+name: gssoc23
+about: Issue template for GSSoC'23 contributors
+title: ''
+labels: gssoc23
+assignees: ''
+
+---
+
+**Issue Description:**
+[Describe the issue or feature request in detail. Provide a clear and concise explanation of what needs to be addressed or implemented.]
+
+**Expected Behavior:**
+[Describe what should happen when the issue is resolved or the feature is implemented.]
+
+**Current Behavior:**
+[Describe the current behaviour or any error messages encountered, if applicable.]
+
+**Additional Information:**
+[Provide any additional information, screenshots, or logs that may be helpful in addressing the issue.]
+
+**Labels:**
+[Add appropriate labels to categorize the issue, such as bug, enhancement, documentation, etc.]