fix: temporary fix for sonarqube

[erikburt]

We are now experiencing problems with sonarqube scan due to a faulty push to the docker image hub.

Issue explained here: https://github.com/SonarSource/sonar-scanner-cli-docker/issues/223#issuecomment-2059724480

Essentially, the github action we rely on points to the 5.0.1 base image. However that tag was erroneously updated 9 months later (docker needs tag immutability!).

I forked the action to my personal account, and pinned the base image to the SHA from a previously successful run.

• My commit: erikburt/sonarqube-scan-action@4a4b51f
• Previous Run showing proper sha: https://github.com/smartcontractkit/chainlink/actions/runs/8364903954/job/22901840642#step:2:23

...
  #5 [internal] load build context
  #5 transferring context: 1.50kB done
  #5 DONE 0.0s
  
  #6 [1/5] FROM docker.io/sonarsource/sonar-scanner-cli:5.0.1@sha256:494ecc3b5b1ee1625bd377b3905c4284e4f0cc155cff397805a244dee1c7d575
  #6 resolve docker.io/sonarsource/sonar-scanner-cli:5.0.1@sha256:494ecc3b5b1ee1625bd377b3905c4284e4f0cc155cff397805a244dee1c7d575 done
  #6 extracting sha256:9398808236ffac29e60c04ec906d8d409af7fa19dc57d8c65ad167e9c4967006
  #6 sha256:494ecc3b5b1ee1625bd377b3905c4284e4f0cc155cff397805a244dee1c7d575 1.36kB / 1.36kB done
  #6 sha256:2f384fb1bbd5f033fa0b628efb5ef3d40b9cafaddb68b9ffdd8c3cacdc237199 5.05kB / 5.05kB done
...

[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarQube

[chainchad]

Verified:

git diff 0e7aeb5 upstream/master                                                                                               
diff --git a/Dockerfile b/Dockerfile
index cd65f56..882c681 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM sonarsource/sonar-scanner-cli@sha256:494ecc3b5b1ee1625bd377b3905c4284e4f0cc155cff397805a244dee1c7d575
+FROM sonarsource/sonar-scanner-cli:5.0.1

 LABEL version="2.0.1" \
       repository="https://github.com/sonarsource/sonarqube-scan-action" \