fix(deps): update dependency org.dafny:dafnyruntime to v4.9.0

[mend-for-github-com]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.dafny:DafnyRuntime	4.8.1 -> 4.9.0

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Release Notes

dafny-lang/dafny (org.dafny:DafnyRuntime)

v4.9.0

New features

• Added opaque blocks to the language. Opaque blocks enable improving verification performance. See the documentation for more details. (https://github.com/dafny-lang/dafny/pull/5761)

• By blocks ("... by { ... }") are now available for assert statements, call statements, and the three types of assignments (:=, :-, :|). Also, by blocks should now be more intuitive since they enable proving any assertions on the left-hand side of the 'by', not just the 'outermost' one. For example, previously assert 3 / x == 1 by { assume x == 3; } could still give a possible division by zero error, but now it won't. (https://github.com/dafny-lang/dafny/pull/5779)

• Use --suggest-proof-refactoring to be alerted of function definitions, which have no contribution to a method's proof, and facts, which are only used once in a proof. (https://github.com/dafny-lang/dafny/pull/5812)

• Support for top-level @​-attributes (https://github.com/dafny-lang/dafny/pull/5825)

Bug fixes

• Enable abstract imports to work well with match expression that occur in specifications (https://github.com/dafny-lang/dafny/pull/5808)

• Fix a bug that prevented using reveal statement expressions in the body of a constant. (https://github.com/dafny-lang/dafny/pull/5823)

• Improve performance of dafny verify for large applications, by removing memory leaks (https://github.com/dafny-lang/dafny/pull/5827)

• Green gutter icons cover constants without RHS (https://github.com/dafny-lang/dafny/pull/5841)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.07%. Comparing base (32b0f5f) to head (d825bdf).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #949   +/-   ##
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  Coverage     78.07%   78.07%           
  Complexity      996      996           
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  Files            99       99           
  Lines          4625     4625           
  Branches        431      431           
=========================================
  Hits           3611     3611           
  Misses          834      834           
  Partials        180      180           

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