Bump to v5.26.2

Author: melroy89

README.md

@@ -30,5 +30,5 @@ You can also specify a version.
 
 ```diff
 -        uses: docker://ghcr.io/mbinorg/psalm-security-scan
-+        uses: docker://ghcr.io/mbinorg/psalm-security-scan:5.7.7
++        uses: docker://ghcr.io/mbinorg/psalm-security-scan:5.26.2
 ```

action.yml

@@ -14,4 +14,4 @@ inputs:
     description: 'File for Psalm’s output'
 runs:
   using: 'docker'
-  image: 'docker://ghcr.io/mbinorg/psalm-security-scan:5.26.1'
+  image: 'docker://ghcr.io/mbinorg/psalm-security-scan:5.26.2'