Update boto3 requirement from >=1.43.38 to >=1.43.42 in /src/roster-sync (#155)

* Update boto3 requirement from >=1.43.38 to >=1.43.42 in /src/roster-sync

Updates the requirements on [boto3](https://github.com/boto/boto3) to permit the latest version.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](https://github.com/boto/boto3/compare/1.43.38...1.43.42)

---
updated-dependencies:
- dependency-name: boto3
  dependency-version: 1.43.42
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update boto3 requirement from >=1.43.38 to >=1.43.42 in /src/shared (#156)

* Update boto3 requirement from >=1.43.39 to >=1.43.43 in /src/slack-bot (#157)

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Adam Moussa <166072409+amoussa1229@users.noreply.github.com>

src/roster-sync/requirements.txt

@@ -1,2 +1,2 @@
-boto3>=1.43.38
+boto3>=1.43.42
 requests>=2.34.2

src/shared/requirements.txt

@@ -1,2 +1,2 @@
-boto3>=1.43.38
+boto3>=1.43.42
 requests>=2.34.2

src/slack-bot/requirements.txt

@@ -1,2 +1,2 @@
 slack_bolt>=1.29.0,<2.0
-boto3>=1.43.39
+boto3>=1.43.43

src/weekly-post/requirements.txt

@@ -1,2 +1,2 @@
-slack_sdk>=3.42.0,<4.0
-boto3>=1.43.38
+boto3>=1.43.43
+slack_sdk>=3.43.0,<4.0