chore(deps): update all github actions to v2 (major)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v1 -> v2
actions/setup-java	action	major	v1 -> v2
codecov/codecov-action	action	major	v1 -> v2

---

Release Notes

actions/checkout

v2

Compare Source

• Fix default branch resolution for .wiki and when using SSH

actions/setup-java

v2

Compare Source

codecov/codecov-action

v2

Compare Source

---

Configuration

📅 Schedule: "before 4am on Saturday" (UTC).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.

[codecov]

Codecov Report

Merging #10 (c238111) into main (2efb0d6) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main      #10      +/-   ##
============================================
- Coverage     91.82%   91.81%   -0.02%     
  Complexity      172      172              
============================================
  Files            18       18              
  Lines          1113     1197      +84     
  Branches        103      103              
============================================
+ Hits           1022     1099      +77     
- Misses           62       69       +7     
  Partials         29       29              

Flag	Coverage Δ
unittests	91.81% <ø> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...hub/petertrr/diffutils/algorithm/myers/PathNode.kt	75.00% <0.00%> (-2.78%)	⬇️
...kotlin/io/github/petertrr/diffutils/patch/Patch.kt	81.25% <0.00%> (-1.36%)	⬇️
...kotlin/io/github/petertrr/diffutils/patch/Delta.kt	58.18% <0.00%> (-0.91%)	⬇️
...tlin/io/github/petertrr/diffutils/DiffUtilsTest.kt	100.00% <0.00%> (ø)
.../github/petertrr/diffutils/text/StringUtilsTest.kt	100.00% <0.00%> (ø)
...etertrr/diffutils/algorithm/myers/MyersDiffTest.kt	100.00% <0.00%> (ø)
...github/petertrr/diffutils/text/DiffRowGenerator.kt	90.51% <0.00%> (+0.03%)	⬆️
...ub/petertrr/diffutils/text/DiffRowGeneratorTest.kt	99.15% <0.00%> (+0.07%)	⬆️
...ub/petertrr/diffutils/algorithm/myers/MyersDiff.kt	89.83% <0.00%> (+0.17%)	⬆️
...in/io/github/petertrr/diffutils/patch/PatchTest.kt	76.00% <0.00%> (+3.27%)	⬆️
... and 1 more

---

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 2efb0d6...c238111. Read the comment docs.