dependabot + bug template (LesnyRumcajs#297)

.github/dependabot.yml

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+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/" # Location of package manifests
+    open-pull-requests-limit: 1
+    schedule:
+      interval: "weekly"
+  # https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot#enabling-dependabot-version-updates-for-actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    open-pull-requests-limit: 1
+    schedule:
+      interval: "weekly"

.github/workflows/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve gRPC bench!
+title: ''
+labels: 'Bug'
+assignees: ''
+
+---
+
+**Describe the bug**
+<!-- A clear and concise description of what the bug is. -->
+
+
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Run '....'
+3. See error
+
+
+
+**Log output**
+<!-- Please paste the log output derived from the error. -->
+<details>
+  <summary>Log Output</summary>
+
+  ```Paste log output here
+  paste log output...
+  ```
+</details> 
+
+
+
+**Expected behaviour**
+<!-- A clear and concise description of what you expected to happen. -->
+
+
+
+**Screenshots**
+<!-- If applicable, add screenshots to help explain your problem. -->
+
+
+
+**Environment (please complete the following information):**
+ - OS: 
+ - Rust version(e.g. `rustc --version`)
+ - Branch/commit
+
+
+
+**Other information and links**
+<!-- Add any other context about the problem here. -->
+
+<!-- Thank you 🙏 -->