upgrade dependabot

[mversic]

Description of the Change

as it's stated here

Dependabot Preview has been shut down as of August 3rd, 2021. In order to keep getting Dependabot updates, please migrate to GitHub-native Dependabot.

Since I noticed dependabot was outdated I've upgraded it to version 2 which is now GitHub native. There were minor tweaks in the dependabot config API

Issue

Benefits

Possible Drawbacks

Usage Examples or Tests [optional]

Alternate Designs [optional]

[codecov]

Codecov Report

Merging #1580 (b80ba6d) into iroha2-dev (53190df) will increase coverage by 0.03%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           iroha2-dev    #1580      +/-   ##
==============================================
+ Coverage       76.81%   76.84%   +0.03%     
==============================================
  Files             118      118              
  Lines           19369    19369              
==============================================
+ Hits            14878    14885       +7     
+ Misses           4491     4484       -7     

Impacted Files	Coverage Δ
p2p/src/peer.rs	84.55% <0.00%> (-1.02%)	⬇️
actor/src/lib.rs	81.55% <0.00%> (-0.65%)	⬇️
data_model/src/lib.rs	65.82% <0.00%> (-0.43%)	⬇️
core/src/sumeragi/network_topology.rs	94.87% <0.00%> (-0.26%)	⬇️
core/src/wsv.rs	93.62% <0.00%> (+0.33%)	⬆️
core/src/sumeragi/view_change.rs	97.88% <0.00%> (+0.42%)	⬆️
core/src/block_sync.rs	91.84% <0.00%> (+0.54%)	⬆️
core/src/sumeragi/mod.rs	90.06% <0.00%> (+1.65%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 53190df...b80ba6d. Read the comment docs.